21022022022012 has 36 divisors (see below), whose sum is σ = 57969818304216. Its totient is φ = 6370309703520.

The previous prime is 21022022022011. The next prime is 21022022022037.

21022022022012 is a `hidden beast` number, since 2 + 1 + 0 + 220 + 220 + 220 + 1 + 2 = 666.

21022022022012 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022022022011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26542956703 + ... + 26542957494.

Almost surely, 2^{21022022022012} is an apocalyptic number.

21022022022012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21022022022012 is an abundant number, since it is smaller than the sum of its proper divisors (36947796282204).

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

21022022022012 is a wasteful number, since it uses less digits than its factorization.

21022022022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53085914218 (or 53085914213 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

It can be divided in two parts, 2102202 and 2022012, that added together give a palindrome (4124214).

The spelling of 21022022022012 in words is "twenty-one trillion, twenty-two billion, twenty-two million, twenty-two thousand, twelve".