22112011212 has 24 divisors (see below), whose sum is σ = 51650860800. Its totient is φ = 7362646416.

The previous prime is 22112011211. The next prime is 22112011213. The reversal of 22112011212 is 21211021122.

It is an interprime number because it is at equal distance from previous prime (22112011211) and next prime (22112011213).

It is a super-2 number, since 2×22112011212² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22112011191 and 22112011200.

It is not an unprimeable number, because it can be changed into a prime (22112011211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991512 + ... + 1013567.

It is an arithmetic number, because the mean of its divisors is an integer number (2152119200).

Almost surely, 2^22112011212 is an apocalyptic number.

It is an amenable number.

22112011212 is an abundant number, since it is smaller than the sum of its proper divisors (29538849588).

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

22112011212 is a wasteful number, since it uses less digits than its factorization.

22112011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006005 (or 2006003 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22112011212 its reverse (21211021122), we get a palindrome (43323032334).

The spelling of 22112011212 in words is "twenty-two billion, one hundred twelve million, eleven thousand, two hundred twelve".