21220133232000 has 128 divisors (see below), whose sum is σ = 70344741823200. Its totient is φ = 5658702182400.

The previous prime is 21220133231959. The next prime is 21220133232013. The reversal of 21220133232000 is 23233102212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

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, 220995055 + ... + 221091054.

Almost surely, 2^{21220133232000} is an apocalyptic number.

21220133232000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21220133232000 is an abundant number, since it is smaller than the sum of its proper divisors (49124608591200).

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

21220133232000 is an equidigital number, since it uses as much as digits as its factorization.

21220133232000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442086141 (or 442086119 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21220133232000 its reverse (23233102212), we get a palindrome (21243366334212).

The spelling of 21220133232000 in words is "twenty-one trillion, two hundred twenty billion, one hundred thirty-three million, two hundred thirty-two thousand".