22212111228 has 48 divisors (see below), whose sum is σ = 52638314400. Its totient is φ = 7289196544.

The previous prime is 22212111221. The next prime is 22212111239. The reversal of 22212111228 is 82211121222.

It is a junction number, because it is equal to n+sod(n) for n = 22212111198 and 22212111207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212111221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147076 + ... + 257012.

It is an arithmetic number, because the mean of its divisors is an integer number (1096631550).

Almost surely, 2^22212111228 is an apocalyptic number.

It is an amenable number.

22212111228 is an abundant number, since it is smaller than the sum of its proper divisors (30426203172).

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

22212111228 is a wasteful number, since it uses less digits than its factorization.

22212111228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110206 (or 110204 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

The spelling of 22212111228 in words is "twenty-two billion, two hundred twelve million, one hundred eleven thousand, two hundred twenty-eight".