12220428831 has 16 divisors (see below), whose sum is σ = 17550225504. Its totient is φ = 7519002624.

The previous prime is 12220428827. The next prime is 12220428833. The reversal of 12220428831 is 13882402221.

It is not a de Polignac number, because 12220428831 - 2² = 12220428827 is a prime.

It is a super-2 number, since 2×12220428831² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12220428792 and 12220428801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220428833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244575 + ... + 290271.

It is an arithmetic number, because the mean of its divisors is an integer number (1096889094).

Almost surely, 2^12220428831 is an apocalyptic number.

12220428831 is a deficient number, since it is larger than the sum of its proper divisors (5329796673).

12220428831 is a wasteful number, since it uses less digits than its factorization.

12220428831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52570.

The product of its (nonzero) digits is 12288, while the sum is 33.

The spelling of 12220428831 in words is "twelve billion, two hundred twenty million, four hundred twenty-eight thousand, eight hundred thirty-one".