21323131223202 has 24 divisors (see below), whose sum is σ = 46223797950720. Its totient is φ = 7104067284600.

The previous prime is 21323131223129. The next prime is 21323131223279. The reversal of 21323131223202 is 20232213132312.

21323131223202 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 313 + 1 + 22 + 320 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 303557502 + ... + 303627737.

It is an arithmetic number, because the mean of its divisors is an integer number (1925991581280).

Almost surely, 2^{21323131223202} is an apocalyptic number.

21323131223202 is an abundant number, since it is smaller than the sum of its proper divisors (24900666727518).

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

21323131223202 is a wasteful number, since it uses less digits than its factorization.

21323131223202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607187198 (or 607187195 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21323131223202 its reverse (20232213132312), we get a palindrome (41555344355514).

The spelling of 21323131223202 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred thirty-one million, two hundred twenty-three thousand, two hundred two".