22122100222212 has 96 divisors (see below), whose sum is σ = 54759049196544. Its totient is φ = 6936075907200.

The previous prime is 22122100222127. The next prime is 22122100222319. The reversal of 22122100222212 is 21222200122122.

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, 68715483 + ... + 69036669.

It is an arithmetic number, because the mean of its divisors is an integer number (570406762464).

Almost surely, 2^{22122100222212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22122100222212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27379524598272).

22122100222212 is an abundant number, since it is smaller than the sum of its proper divisors (32636948974332).

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

22122100222212 is a wasteful number, since it uses less digits than its factorization.

22122100222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325369 (or 325367 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22122100222212 its reverse (21222200122122), we get a palindrome (43344300344334).

The spelling of 22122100222212 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred million, two hundred twenty-two thousand, two hundred twelve".