22100122212 has 48 divisors (see below), whose sum is σ = 58945971840. Its totient is φ = 6313001472.

The previous prime is 22100122207. The next prime is 22100122223. The reversal of 22100122212 is 21222100122.

It is a junction number, because it is equal to n+sod(n) for n = 22100122191 and 22100122200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420114 + ... + 469782.

It is an arithmetic number, because the mean of its divisors is an integer number (1228041080).

Almost surely, 2^22100122212 is an apocalyptic number.

It is an amenable number.

22100122212 is an abundant number, since it is smaller than the sum of its proper divisors (36845849628).

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

22100122212 is a wasteful number, since it uses less digits than its factorization.

22100122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54980 (or 54978 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22100122212 its reverse (21222100122), we get a palindrome (43322222334).

It can be divided in two parts, 22100122 and 212, that multiplied together give a palindrome (4685225864).

The spelling of 22100122212 in words is "twenty-two billion, one hundred million, one hundred twenty-two thousand, two hundred twelve".