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122212012 = 22132347521
BaseRepresentation
bin1110100100011…
…00111010101100
322111222000100211
413102030322230
5222241241022
620043232204
73012533146
oct722147254
9274860324
10122212012
1162a9276a
1234b18664
131c41ca00
1412333c96
15aae0e77
hex748ceac

122212012 has 36 divisors (see below), whose sum is σ = 232701336. Its totient is φ = 56135040.

The previous prime is 122212007. The next prime is 122212043. The reversal of 122212012 is 210212221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 122211983 and 122212001.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234312 + ... + 234832.

It is an arithmetic number, because the mean of its divisors is an integer number (6463926).

Almost surely, 2122212012 is an apocalyptic number.

It is an amenable number.

122212012 is a deficient number, since it is larger than the sum of its proper divisors (110489324).

122212012 is a wasteful number, since it uses less digits than its factorization.

122212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898 (or 883 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 122212012 is about 11054.9541835324. The cubic root of 122212012 is about 496.2546981432.

Adding to 122212012 its reverse (210212221), we get a palindrome (332424233).

The spelling of 122212012 in words is "one hundred twenty-two million, two hundred twelve thousand, twelve".

Divisors: 1 2 4 13 26 52 169 338 347 521 676 694 1042 1388 2084 4511 6773 9022 13546 18044 27092 58643 88049 117286 176098 180787 234572 352196 361574 723148 2350231 4700462 9400924 30553003 61106006 122212012