22212120001020 has 96 divisors (see below), whose sum is σ = 62240456678400. Its totient is φ = 5918803148544.

The previous prime is 22212120001003. The next prime is 22212120001063. The reversal of 22212120001020 is 2010002121222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 471982251 + ... + 472029309.

It is an arithmetic number, because the mean of its divisors is an integer number (648338090400).

Almost surely, 2^{22212120001020} is an apocalyptic number.

22212120001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212120001020 is an abundant number, since it is smaller than the sum of its proper divisors (40028336677380).

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

22212120001020 is a wasteful number, since it uses less digits than its factorization.

22212120001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52787 (or 52785 counting only the distinct ones).

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

Adding to 22212120001020 its reverse (2010002121222), we get a palindrome (24222122122242).

The spelling of 22212120001020 in words is "twenty-two trillion, two hundred twelve billion, one hundred twenty million, one thousand, twenty".