22212123208 has 16 divisors (see below), whose sum is σ = 45433888560. Its totient is φ = 10096419600.

The previous prime is 22212123191. The next prime is 22212123221. The reversal of 22212123208 is 80232121222.

It is a super-2 number, since 2×22212123208² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126205158 + ... + 126205333.

It is an arithmetic number, because the mean of its divisors is an integer number (2839618035).

Almost surely, 2^22212123208 is an apocalyptic number.

It is an amenable number.

22212123208 is an abundant number, since it is smaller than the sum of its proper divisors (23221765352).

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

22212123208 is a wasteful number, since it uses less digits than its factorization.

22212123208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252410508 (or 252410504 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The spelling of 22212123208 in words is "twenty-two billion, two hundred twelve million, one hundred twenty-three thousand, two hundred eight".