20212111120 has 160 divisors (see below), whose sum is σ = 50698255104. Its totient is φ = 7474790400.

The previous prime is 20212111103. The next prime is 20212111147. The reversal of 20212111120 is 2111121202.

It is a self number, because there is not a number n which added to its sum of digits gives 20212111120.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8523535 + ... + 8525905.

Almost surely, 2^20212111120 is an apocalyptic number.

20212111120 is a gapful number since it is divisible by the number (20) 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 20212111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25349127552).

20212111120 is an abundant number, since it is smaller than the sum of its proper divisors (30486143984).

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

20212111120 is a wasteful number, since it uses less digits than its factorization.

20212111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561 (or 2555 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20212111120 its reverse (2111121202), we get a palindrome (22323232322).

The spelling of 20212111120 in words is "twenty billion, two hundred twelve million, one hundred eleven thousand, one hundred twenty".