21331202311320 has 128 divisors (see below), whose sum is σ = 70767525795840. Its totient is φ = 5100362173440.

The previous prime is 21331202311313. The next prime is 21331202311337. The reversal of 21331202311320 is 2311320213312.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 110588584 + ... + 110781303.

It is an arithmetic number, because the mean of its divisors is an integer number (552871295280).

Almost surely, 2^{21331202311320} is an apocalyptic number.

21331202311320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21331202311320 is an abundant number, since it is smaller than the sum of its proper divisors (49436323484520).

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

21331202311320 is a wasteful number, since it uses less digits than its factorization.

21331202311320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221369985 (or 221369981 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21331202311320 its reverse (2311320213312), we get a palindrome (23642522524632).

The spelling of 21331202311320 in words is "twenty-one trillion, three hundred thirty-one billion, two hundred two million, three hundred eleven thousand, three hundred twenty".