21232432113402 has 32 divisors (see below), whose sum is σ = 44978003600832. Its totient is φ = 6658902404864.

The previous prime is 21232432113401. The next prime is 21232432113427. The reversal of 21232432113402 is 20431123423212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21232432113402.

It is not an unprimeable number, because it can be changed into a prime (21232432113401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34896408 + ... + 35499635.

It is an arithmetic number, because the mean of its divisors is an integer number (1405562612526).

Almost surely, 2^{21232432113402} is an apocalyptic number.

21232432113402 is an abundant number, since it is smaller than the sum of its proper divisors (23745571487430).

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

21232432113402 is a wasteful number, since it uses less digits than its factorization.

21232432113402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70399022.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 21232432113402 its reverse (20431123423212), we get a palindrome (41663555536614).

The spelling of 21232432113402 in words is "twenty-one trillion, two hundred thirty-two billion, four hundred thirty-two million, one hundred thirteen thousand, four hundred two".