21232032002120 has 32 divisors (see below), whose sum is σ = 49063209089400. Its totient is φ = 8263277319168.

The previous prime is 21232032002113. The next prime is 21232032002221. The reversal of 21232032002120 is 2120023023212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17463021338884 + 3769010663236 = 4178878^2 + 1941394^2 .

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 = 21232032002092 and 21232032002101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7172982305 + ... + 7172985264.

Almost surely, 2^{21232032002120} is an apocalyptic number.

21232032002120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21232032002120 is an abundant number, since it is smaller than the sum of its proper divisors (27831177087280).

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

21232032002120 is a wasteful number, since it uses less digits than its factorization.

21232032002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14345967617 (or 14345967613 counting only the distinct ones).

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

Adding to 21232032002120 its reverse (2120023023212), we get a palindrome (23352055025332).

The spelling of 21232032002120 in words is "twenty-one trillion, two hundred thirty-two billion, thirty-two million, two thousand, one hundred twenty".