220211461 has 4 divisors (see below), whose sum is σ = 220340992. Its totient is φ = 220081932.

The previous prime is 220211447. The next prime is 220211477. The reversal of 220211461 is 164112022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 164112022 = 2 ⋅82056011.

It is a cyclic number.

It is not a de Polignac number, because 220211461 - 2⁵ = 220211429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220211441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62181 + ... + 65626.

It is an arithmetic number, because the mean of its divisors is an integer number (55085248).

Almost surely, 2^220211461 is an apocalyptic number.

It is an amenable number.

220211461 is a deficient number, since it is larger than the sum of its proper divisors (129531).

220211461 is a wasteful number, since it uses less digits than its factorization.

220211461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129530.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 220211461 is about 14839.5236109519. The cubic root of 220211461 is about 603.8744284150.

Adding to 220211461 its reverse (164112022), we get a palindrome (384323483).

The spelling of 220211461 in words is "two hundred twenty million, two hundred eleven thousand, four hundred sixty-one".