21332220012020 has 48 divisors (see below), whose sum is σ = 46799889550848. Its totient is φ = 8158143972480.

The previous prime is 21332220011969. The next prime is 21332220012031. The reversal of 21332220012020 is 2021002223312.

It is a happy number.

It is a super-2 number, since 2×21332220012020² (a number of 27 digits) contains 22 as substring.

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 = 21332220011983 and 21332220012001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207218459 + ... + 207321378.

It is an arithmetic number, because the mean of its divisors is an integer number (974997698976).

Almost surely, 2^{21332220012020} is an apocalyptic number.

21332220012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21332220012020 is an abundant number, since it is smaller than the sum of its proper divisors (25467669538828).

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

21332220012020 is a wasteful number, since it uses less digits than its factorization.

21332220012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414539960 (or 414539958 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21332220012020 its reverse (2021002223312), we get a palindrome (23353222235332).

The spelling of 21332220012020 in words is "twenty-one trillion, three hundred thirty-two billion, two hundred twenty million, twelve thousand, twenty".