21002022020112 has 120 divisors (see below), whose sum is σ = 63117049616352. Its totient is φ = 6000213542400.

The previous prime is 21002022020047. The next prime is 21002022020131. The reversal of 21002022020112 is 21102022020012.

It is a junction number, because it is equal to n+sod(n) for n = 21002022020091 and 21002022020100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39747412 + ... + 40272332.

Almost surely, 2^{21002022020112} is an apocalyptic number.

It is an amenable number.

21002022020112 is an abundant number, since it is smaller than the sum of its proper divisors (42115027596240).

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

21002022020112 is a wasteful number, since it uses less digits than its factorization.

21002022020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541957 (or 541944 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21002022020112 its reverse (21102022020012), we get a palindrome (42104044040124).

The spelling of 21002022020112 in words is "twenty-one trillion, two billion, twenty-two million, twenty thousand, one hundred twelve".