21123032102220 has 96 divisors (see below), whose sum is σ = 59956417059840. Its totient is φ = 5555486615040.

The previous prime is 21123032102219. The next prime is 21123032102233. The reversal of 21123032102220 is 2220123032112.

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, 289880151 + ... + 289953009.

It is an arithmetic number, because the mean of its divisors is an integer number (624546011040).

Almost surely, 2^{21123032102220} is an apocalyptic number.

21123032102220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21123032102220 is an abundant number, since it is smaller than the sum of its proper divisors (38833384957620).

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

21123032102220 is a wasteful number, since it uses less digits than its factorization.

21123032102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139135 (or 139133 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21123032102220 its reverse (2220123032112), we get a palindrome (23343155134332).

The spelling of 21123032102220 in words is "twenty-one trillion, one hundred twenty-three billion, thirty-two million, one hundred two thousand, two hundred twenty".