12031322502 has 16 divisors (see below), whose sum is σ = 24064185600. Its totient is φ = 4010184072.

The previous prime is 12031322497. The next prime is 12031322507. The reversal of 12031322502 is 20522313021.

It is an interprime number because it is at equal distance from previous prime (12031322497) and next prime (12031322507).

It is a super-2 number, since 2×12031322502² (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 (12031322507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54103 + ... + 164285.

It is an arithmetic number, because the mean of its divisors is an integer number (1504011600).

Almost surely, 2^12031322502 is an apocalyptic number.

12031322502 is an abundant number, since it is smaller than the sum of its proper divisors (12032863098).

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

12031322502 is a wasteful number, since it uses less digits than its factorization.

12031322502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128387.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 12031322502 its reverse (20522313021), we get a palindrome (32553635523).

The spelling of 12031322502 in words is "twelve billion, thirty-one million, three hundred twenty-two thousand, five hundred two".