21232312112020 has 48 divisors (see below), whose sum is σ = 44659887310080. Its totient is φ = 8479215005184.

The previous prime is 21232312112009. The next prime is 21232312112041. The reversal of 21232312112020 is 2021121323212.

It is a super-2 number, since 2×21232312112020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21232312111982 and 21232312112000.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 32101897 + ... + 32756623.

It is an arithmetic number, because the mean of its divisors is an integer number (930414318960).

Almost surely, 2^{21232312112020} is an apocalyptic number.

21232312112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21232312112020 is an abundant number, since it is smaller than the sum of its proper divisors (23427575198060).

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

21232312112020 is a wasteful number, since it uses less digits than its factorization.

21232312112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657352 (or 657350 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21232312112020 its reverse (2021121323212), we get a palindrome (23253433435232).

The spelling of 21232312112020 in words is "twenty-one trillion, two hundred thirty-two billion, three hundred twelve million, one hundred twelve thousand, twenty".