21320220132112 has 40 divisors (see below), whose sum is σ = 45131367068352. Its totient is φ = 9676347964800.

The previous prime is 21320220132109. The next prime is 21320220132143. The reversal of 21320220132112 is 21123102202312.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 91515748 + ... + 91748419.

Almost surely, 2^{21320220132112} is an apocalyptic number.

21320220132112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21320220132112 is an abundant number, since it is smaller than the sum of its proper divisors (23811146936240).

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

21320220132112 is a wasteful number, since it uses less digits than its factorization.

21320220132112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183264847 (or 183264841 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21320220132112 its reverse (21123102202312), we get a palindrome (42443322334424).

The spelling of 21320220132112 in words is "twenty-one trillion, three hundred twenty billion, two hundred twenty million, one hundred thirty-two thousand, one hundred twelve".