12031430022 has 24 divisors (see below), whose sum is σ = 26076717576. Its totient is φ = 4009150656.

The previous prime is 12031430011. The next prime is 12031430027. The reversal of 12031430022 is 22003413021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12031429977 and 12031430004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031430027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53763 + ... + 164174.

It is an arithmetic number, because the mean of its divisors is an integer number (1086529899).

Almost surely, 2^12031430022 is an apocalyptic number.

12031430022 is an abundant number, since it is smaller than the sum of its proper divisors (14045287554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12031430022 is a wasteful number, since it uses less digits than its factorization.

12031430022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221012 (or 221009 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12031430022 its reverse (22003413021), we get a palindrome (34034843043).

The spelling of 12031430022 in words is "twelve billion, thirty-one million, four hundred thirty thousand, twenty-two".