20112021120 has 64 divisors (see below), whose sum is σ = 64107073440. Its totient is φ = 5363205120.

The previous prime is 20112021119. The next prime is 20112021157. The reversal of 20112021120 is 2112021102.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20112021096 and 20112021105.

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, 5235586 + ... + 5239425.

Almost surely, 2^20112021120 is an apocalyptic number.

20112021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112021120 is an abundant number, since it is smaller than the sum of its proper divisors (43995052320).

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

20112021120 is a wasteful number, since it uses less digits than its factorization.

20112021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10475033 (or 10475021 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20112021120 its reverse (2112021102), we get a palindrome (22224042222).

The spelling of 20112021120 in words is "twenty billion, one hundred twelve million, twenty-one thousand, one hundred twenty".