22122212100220 has 24 divisors (see below), whose sum is σ = 46459612459008. Its totient is φ = 8848319688000.

The previous prime is 22122212100211. The next prime is 22122212100257. The reversal of 22122212100220 is 2200121222122.

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, 35000956 + ... + 35627395.

It is an arithmetic number, because the mean of its divisors is an integer number (1935817185792).

Almost surely, 2^{22122212100220} is an apocalyptic number.

22122212100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22122212100220 is an abundant number, since it is smaller than the sum of its proper divisors (24337400358788).

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

22122212100220 is a wasteful number, since it uses less digits than its factorization.

22122212100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70644021 (or 70644019 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22122212100220 its reverse (2200121222122), we get a palindrome (24322333322342).

The spelling of 22122212100220 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twelve million, one hundred thousand, two hundred twenty".