22122111201220 has 24 divisors (see below), whose sum is σ = 46456701006744. Its totient is φ = 8848793531136.

The previous prime is 22122111201167. The next prime is 22122111201233. The reversal of 22122111201220 is 2210211122122.

It can be written as a sum of positive squares in 4 ways, for example, as 5152209943104 + 16969901258116 = 2269848^2 + 4119454^2 .

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, 478872 + ... + 6668848.

It is an arithmetic number, because the mean of its divisors is an integer number (1935695875281).

Almost surely, 2^{22122111201220} is an apocalyptic number.

22122111201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22122111201220 is an abundant number, since it is smaller than the sum of its proper divisors (24334589805524).

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

22122111201220 is a wasteful number, since it uses less digits than its factorization.

22122111201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6368679 (or 6368677 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22122111201220 its reverse (2210211122122), we get a palindrome (24332322323342).

The spelling of 22122111201220 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred eleven million, two hundred one thousand, two hundred twenty".