21112020020112 has 80 divisors (see below), whose sum is σ = 62331876040320. Its totient is φ = 6031894404096.

The previous prime is 21112020020093. The next prime is 21112020020167. The reversal of 21112020020112 is 21102002021112.

It is a super-3 number, since 3×21112020020112³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21112020020091 and 21112020020100.

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, 18597028 + ... + 19699580.

It is an arithmetic number, because the mean of its divisors is an integer number (779148450504).

Almost surely, 2^{21112020020112} is an apocalyptic number.

It is an amenable number.

21112020020112 is an abundant number, since it is smaller than the sum of its proper divisors (41219856020208).

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

21112020020112 is a wasteful number, since it uses less digits than its factorization.

21112020020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159560 (or 1159554 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21112020020112 its reverse (21102002021112), we get a palindrome (42214022041224).

The spelling of 21112020020112 in words is "twenty-one trillion, one hundred twelve billion, twenty million, twenty thousand, one hundred twelve".