12001131402 has 64 divisors (see below), whose sum is σ = 28036761984. Its totient is φ = 3390658560.

The previous prime is 12001131391. The next prime is 12001131427. The reversal of 12001131402 is 20413110021.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56008 + ... + 164739.

It is an arithmetic number, because the mean of its divisors is an integer number (438074406).

Almost surely, 2^12001131402 is an apocalyptic number.

12001131402 is an abundant number, since it is smaller than the sum of its proper divisors (16035630582).

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

12001131402 is a wasteful number, since it uses less digits than its factorization.

12001131402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220823.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12001131402 its reverse (20413110021), we get a palindrome (32414241423).

The spelling of 12001131402 in words is "twelve billion, one million, one hundred thirty-one thousand, four hundred two".