21022000221112 has 32 divisors (see below), whose sum is σ = 43021078337520. Its totient is φ = 9550669661440.

The previous prime is 21022000221107. The next prime is 21022000221127. The reversal of 21022000221112 is 21112200022012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59635573 + ... + 59987044.

Almost surely, 2^{21022000221112} is an apocalyptic number.

21022000221112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21022000221112 is an abundant number, since it is smaller than the sum of its proper divisors (21999078116408).

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

21022000221112 is a wasteful number, since it uses less digits than its factorization.

21022000221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119624631 (or 119624627 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21022000221112 its reverse (21112200022012), we get a palindrome (42134200243124).

The spelling of 21022000221112 in words is "twenty-one trillion, twenty-two billion, two hundred twenty-one thousand, one hundred twelve".