22211220222 has 32 divisors (see below), whose sum is σ = 52261696800. Its totient is φ = 6968225664.

The previous prime is 22211220211. The next prime is 22211220247. The reversal of 22211220222 is 22202211222.

22211220222 is a `hidden beast` number, since 2 + 221 + 1 + 220 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22211220195 and 22211220204.

It is a congruent number.

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, 12096697 + ... + 12098532.

It is an arithmetic number, because the mean of its divisors is an integer number (1633178025).

Almost surely, 2^22211220222 is an apocalyptic number.

22211220222 is an abundant number, since it is smaller than the sum of its proper divisors (30050476578).

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

22211220222 is a wasteful number, since it uses less digits than its factorization.

22211220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24195257 (or 24195251 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22211220222 its reverse (22202211222), we get a palindrome (44413431444).

The spelling of 22211220222 in words is "twenty-two billion, two hundred eleven million, two hundred twenty thousand, two hundred twenty-two".