22102122222 has 24 divisors (see below), whose sum is σ = 48791479464. Its totient is φ = 7228366704.

The previous prime is 22102122209. The next prime is 22102122223. The reversal of 22102122222 is 22222120122.

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 = 22102122195 and 22102122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102122223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11582968 + ... + 11584875.

It is an arithmetic number, because the mean of its divisors is an integer number (2032978311).

Almost surely, 2^22102122222 is an apocalyptic number.

22102122222 is an abundant number, since it is smaller than the sum of its proper divisors (26689357242).

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

22102122222 is a wasteful number, since it uses less digits than its factorization.

22102122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23167904 (or 23167901 counting only the distinct ones).

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

Adding to 22102122222 its reverse (22222120122), we get a palindrome (44324242344).

The spelling of 22102122222 in words is "twenty-two billion, one hundred two million, one hundred twenty-two thousand, two hundred twenty-two".