20122111020 has 96 divisors (see below), whose sum is σ = 61486387200. Its totient is φ = 4876303360.

The previous prime is 20122110997. The next prime is 20122111127. The reversal of 20122111020 is 2011122102.

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 = 20122110987 and 20122111005.

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, 3164164 + ... + 3170516.

It is an arithmetic number, because the mean of its divisors is an integer number (640483200).

Almost surely, 2^20122111020 is an apocalyptic number.

20122111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122111020 is an abundant number, since it is smaller than the sum of its proper divisors (41364276180).

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

20122111020 is a wasteful number, since it uses less digits than its factorization.

20122111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11175 (or 11173 counting only the distinct ones).

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

Adding to 20122111020 its reverse (2011122102), we get a palindrome (22133233122).

The spelling of 20122111020 in words is "twenty billion, one hundred twenty-two million, one hundred eleven thousand, twenty".