22212102211220 has 24 divisors (see below), whose sum is σ = 47730191730144. Its totient is φ = 8678216677536.

The previous prime is 22212102211217. The next prime is 22212102211253. The reversal of 22212102211220 is 2211220121222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22212102211192 and 22212102211201.

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, 12914012054 + ... + 12914013773.

It is an arithmetic number, because the mean of its divisors is an integer number (1988757988756).

Almost surely, 2^{22212102211220} is an apocalyptic number.

22212102211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212102211220 is an abundant number, since it is smaller than the sum of its proper divisors (25518089518924).

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

22212102211220 is a wasteful number, since it uses less digits than its factorization.

22212102211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25828025879 (or 25828025877 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22212102211220 its reverse (2211220121222), we get a palindrome (24423322332442).

The spelling of 22212102211220 in words is "twenty-two trillion, two hundred twelve billion, one hundred two million, two hundred eleven thousand, two hundred twenty".