21002222320112 has 20 divisors (see below), whose sum is σ = 44391060813336. Its totient is φ = 9546464690880.

The previous prime is 21002222320091. The next prime is 21002222320199. The reversal of 21002222320112 is 21102322220012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59665404143 + ... + 59665404494.

Almost surely, 2^{21002222320112} is an apocalyptic number.

21002222320112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21002222320112 is an abundant number, since it is smaller than the sum of its proper divisors (23388838493224).

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

21002222320112 is a wasteful number, since it uses less digits than its factorization.

21002222320112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119330808656 (or 119330808650 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21002222320112 its reverse (21102322220012), we get a palindrome (42104544540124).

The spelling of 21002222320112 in words is "twenty-one trillion, two billion, two hundred twenty-two million, three hundred twenty thousand, one hundred twelve".