21120066552112 has 80 divisors (see below), whose sum is σ = 45045614922912. Its totient is φ = 9512870850560.

The previous prime is 21120066552077. The next prime is 21120066552127. The reversal of 21120066552112 is 21125566002112.

It is a super-2 number, since 2×21120066552112² (a number of 27 digits) contains 22 as substring.

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, 87326778 + ... + 87568294.

Almost surely, 2^{21120066552112} is an apocalyptic number.

21120066552112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21120066552112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22522807461456).

21120066552112 is an abundant number, since it is smaller than the sum of its proper divisors (23925548370800).

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

21120066552112 is a wasteful number, since it uses less digits than its factorization.

21120066552112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246046 (or 246040 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 21120066552112 in words is "twenty-one trillion, one hundred twenty billion, sixty-six million, five hundred fifty-two thousand, one hundred twelve".