12220432431 has 16 divisors (see below), whose sum is σ = 16467496320. Its totient is φ = 8060381280.

The previous prime is 12220432421. The next prime is 12220432453. The reversal of 12220432431 is 13423402221.

It is a happy number.

It is not a de Polignac number, because 12220432431 - 2⁹ = 12220431919 is a prime.

It is a super-2 number, since 2×12220432431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220432421) 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, 198916 + ... + 252998.

It is an arithmetic number, because the mean of its divisors is an integer number (1029218520).

Almost surely, 2^12220432431 is an apocalyptic number.

12220432431 is a deficient number, since it is larger than the sum of its proper divisors (4247063889).

12220432431 is a wasteful number, since it uses less digits than its factorization.

12220432431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54886.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12220432431 its reverse (13423402221), we get a palindrome (25643834652).

The spelling of 12220432431 in words is "twelve billion, two hundred twenty million, four hundred thirty-two thousand, four hundred thirty-one".