1215232420402 has 64 divisors (see below), whose sum is σ = 2449754899200. Its totient is φ = 436637018880.

The previous prime is 1215232420309. The next prime is 1215232420411. The reversal of 1215232420402 is 2040242325121.

It is a super-2 number, since 2×1215232420402² (a number of 25 digits) contains 22 as substring.

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, 1856224 + ... + 2424052.

It is an arithmetic number, because the mean of its divisors is an integer number (38277420300).

Almost surely, 2^{1215232420402} is an apocalyptic number.

1215232420402 is an abundant number, since it is smaller than the sum of its proper divisors (1234522478798).

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

1215232420402 is a wasteful number, since it uses less digits than its factorization.

1215232420402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568931.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 1215232420402 its reverse (2040242325121), we get a palindrome (3255474745523).

The spelling of 1215232420402 in words is "one trillion, two hundred fifteen billion, two hundred thirty-two million, four hundred twenty thousand, four hundred two".