21332113101020 has 24 divisors (see below), whose sum is σ = 44797625135424. Its totient is φ = 8532809502656.

The previous prime is 21332113100993. The next prime is 21332113101133. The reversal of 21332113101020 is 2010131123312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 21332113100983 and 21332113101001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2955002 + ... + 7169118.

It is an arithmetic number, because the mean of its divisors is an integer number (1866567713976).

Almost surely, 2^{21332113101020} is an apocalyptic number.

21332113101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21332113101020 is an abundant number, since it is smaller than the sum of its proper divisors (23465512034404).

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

21332113101020 is a wasteful number, since it uses less digits than its factorization.

21332113101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467229 (or 4467227 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21332113101020 its reverse (2010131123312), we get a palindrome (23342244224332).

The spelling of 21332113101020 in words is "twenty-one trillion, three hundred thirty-two billion, one hundred thirteen million, one hundred one thousand, twenty".