12020115402 has 24 divisors (see below), whose sum is σ = 26941639140. Its totient is φ = 3868542720.

The previous prime is 12020115391. The next prime is 12020115409. The reversal of 12020115402 is 20451102021.

12020115402 is a `hidden beast` number, since 120 + 2 + 0 + 1 + 1 + 540 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11900409921 + 119705481 = 109089^2 + 10941^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12020115409) 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, 11512999 + ... + 11514042.

Almost surely, 2^12020115402 is an apocalyptic number.

12020115402 is an abundant number, since it is smaller than the sum of its proper divisors (14921523738).

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

12020115402 is a wasteful number, since it uses less digits than its factorization.

12020115402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23027078 (or 23027075 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 12020115402 its reverse (20451102021), we get a palindrome (32471217423).

The spelling of 12020115402 in words is "twelve billion, twenty million, one hundred fifteen thousand, four hundred two".