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212235101 = 1321255829
BaseRepresentation
bin11001010011001…
…11001101011101
3112210100122211022
430221213031131
5413313010401
633020533525
75154653141
oct1451471535
9483318738
10212235101
11a988a411
125b0b12a5
1334c7c300
1420289221
151397471b
hexca6735d

212235101 has 6 divisors (see below), whose sum is σ = 229816890. Its totient is φ = 195909168.

The previous prime is 212235097. The next prime is 212235103. The reversal of 212235101 is 101532212.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 12040900 + 200194201 = 3470^2 + 14149^2 .

It is not a de Polignac number, because 212235101 - 22 = 212235097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212235101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212235103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 627746 + ... + 628083.

It is an arithmetic number, because the mean of its divisors is an integer number (38302815).

Almost surely, 2212235101 is an apocalyptic number.

It is an amenable number.

212235101 is a deficient number, since it is larger than the sum of its proper divisors (17581789).

212235101 is a wasteful number, since it uses less digits than its factorization.

212235101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255855 (or 1255842 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 212235101 is about 14568.2909430036. The cubic root of 212235101 is about 596.4935301085.

Adding to 212235101 its reverse (101532212), we get a palindrome (313767313).

The spelling of 212235101 in words is "two hundred twelve million, two hundred thirty-five thousand, one hundred one".

Divisors: 1 13 169 1255829 16325777 212235101