21222000020112 has 40 divisors (see below), whose sum is σ = 54823673976960. Its totient is φ = 7073977564800.

The previous prime is 21222000020099. The next prime is 21222000020261. The reversal of 21222000020112 is 21102000022212.

It is a junction number, because it is equal to n+sod(n) for n = 21222000020091 and 21222000020100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22498714 + ... + 23422982.

It is an arithmetic number, because the mean of its divisors is an integer number (1370591849424).

Almost surely, 2^{21222000020112} is an apocalyptic number.

It is an amenable number.

21222000020112 is an abundant number, since it is smaller than the sum of its proper divisors (33601673956848).

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

21222000020112 is a wasteful number, since it uses less digits than its factorization.

21222000020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402631 (or 1402625 counting only the distinct ones).

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

Adding to 21222000020112 its reverse (21102000022212), we get a palindrome (42324000042324).

The spelling of 21222000020112 in words is "twenty-one trillion, two hundred twenty-two billion, twenty thousand, one hundred twelve".