22212021222 has 24 divisors (see below), whose sum is σ = 48146978880. Its totient is φ = 7400786640.

The previous prime is 22212021197. The next prime is 22212021229.

22212021222 is nontrivially palindromic in base 10.

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 = 22212021195 and 22212021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212021229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225654 + ... + 308777.

It is an arithmetic number, because the mean of its divisors is an integer number (2006124120).

Almost surely, 2^22212021222 is an apocalyptic number.

22212021222 is an abundant number, since it is smaller than the sum of its proper divisors (25934957658).

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

22212021222 is a wasteful number, since it uses less digits than its factorization.

22212021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536748 (or 536745 counting only the distinct ones).

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

It can be divided in two parts, 222120 and 21222, that added together give a palindrome (243342).

The spelling of 22212021222 in words is "twenty-two billion, two hundred twelve million, twenty-one thousand, two hundred twenty-two".