21132221120 has 56 divisors (see below), whose sum is σ = 52056334800. Its totient is φ = 8161405952.

The previous prime is 21132221119. The next prime is 21132221137. The reversal of 21132221120 is 2112223112.

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, 1129310 + ... + 1147869.

Almost surely, 2^21132221120 is an apocalyptic number.

21132221120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21132221120 is an abundant number, since it is smaller than the sum of its proper divisors (30924113680).

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

21132221120 is a wasteful number, since it uses less digits than its factorization.

21132221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277225 (or 2277215 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21132221120 its reverse (2112223112), we get a palindrome (23244444232).

The spelling of 21132221120 in words is "twenty-one billion, one hundred thirty-two million, two hundred twenty-one thousand, one hundred twenty".