22012021002012 has 24 divisors (see below), whose sum is σ = 51362649811200. Its totient is φ = 7337159266416.

The previous prime is 22012021001981. The next prime is 22012021002019. The reversal of 22012021002012 is 21020012021022.

It is a junction number, because it is equal to n+sod(n) for n = 22012021001982 and 22012021002000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012021002019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22126462 + ... + 23099877.

It is an arithmetic number, because the mean of its divisors is an integer number (2140110408800).

Almost surely, 2^{22012021002012} is an apocalyptic number.

It is an amenable number.

22012021002012 is an abundant number, since it is smaller than the sum of its proper divisors (29350628809188).

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

22012021002012 is a wasteful number, since it uses less digits than its factorization.

22012021002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45266905 (or 45266903 counting only the distinct ones).

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

Adding to 22012021002012 its reverse (21020012021022), we get a palindrome (43032033023034).

The spelling of 22012021002012 in words is "twenty-two trillion, twelve billion, twenty-one million, two thousand, twelve".