12131124402 has 32 divisors (see below), whose sum is σ = 24686530560. Its totient is φ = 3973067280.

The previous prime is 12131124391. The next prime is 12131124413. The reversal of 12131124402 is 20442113121.

It is an interprime number because it is at equal distance from previous prime (12131124391) and next prime (12131124413).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 750627 + ... + 766617.

It is an arithmetic number, because the mean of its divisors is an integer number (771454080).

Almost surely, 2^12131124402 is an apocalyptic number.

12131124402 is an abundant number, since it is smaller than the sum of its proper divisors (12555406158).

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

12131124402 is a wasteful number, since it uses less digits than its factorization.

12131124402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18198.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12131124402 its reverse (20442113121), we get a palindrome (32573237523).

The spelling of 12131124402 in words is "twelve billion, one hundred thirty-one million, one hundred twenty-four thousand, four hundred two".