22212100122212 has 192 divisors, whose sum is σ = 55457413240320. Its totient is φ = 7491701145600.

The previous prime is 22212100122197. The next prime is 22212100122239. The reversal of 22212100122212 is 21222100121222.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18546464 + ... + 19707752.

It is an arithmetic number, because the mean of its divisors is an integer number (288840693960).

Almost surely, 2^{22212100122212} is an apocalyptic number.

22212100122212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22212100122212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27728706620160).

22212100122212 is an abundant number, since it is smaller than the sum of its proper divisors (33245313118108).

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

22212100122212 is a wasteful number, since it uses less digits than its factorization.

22212100122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161622 (or 1161620 counting only the distinct ones).

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

Adding to 22212100122212 its reverse (21222100121222), we get a palindrome (43434200243434).

The spelling of 22212100122212 in words is "twenty-two trillion, two hundred twelve billion, one hundred million, one hundred twenty-two thousand, two hundred twelve".