21132031112220 has 96 divisors (see below), whose sum is σ = 71600293675008. Its totient is φ = 4546050388992.

The previous prime is 21132031112183. The next prime is 21132031112273. The reversal of 21132031112220 is 2221113023112.

It is a super-3 number, since 3×21132031112220³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 1479826972 + ... + 1479841251.

It is an arithmetic number, because the mean of its divisors is an integer number (745836392448).

Almost surely, 2^{21132031112220} is an apocalyptic number.

21132031112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21132031112220 is an abundant number, since it is smaller than the sum of its proper divisors (50468262562788).

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

21132031112220 is a wasteful number, since it uses less digits than its factorization.

21132031112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959668259 (or 2959668257 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21132031112220 its reverse (2221113023112), we get a palindrome (23353144135332).

The spelling of 21132031112220 in words is "twenty-one trillion, one hundred thirty-two billion, thirty-one million, one hundred twelve thousand, two hundred twenty".