22212022122 has 64 divisors (see below), whose sum is σ = 51219717120. Its totient is φ = 7129911600.

The previous prime is 22212022097. The next prime is 22212022127. The reversal of 22212022122 is 22122021222.

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 = 22212022095 and 22212022104.

It is not an unprimeable number, because it can be changed into a prime (22212022127) 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 31 ways as a sum of consecutive naturals, for example, 97497 + ... + 232227.

It is an arithmetic number, because the mean of its divisors is an integer number (800308080).

Almost surely, 2^22212022122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22212022122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25609858560).

22212022122 is an abundant number, since it is smaller than the sum of its proper divisors (29007694998).

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

22212022122 is a wasteful number, since it uses less digits than its factorization.

22212022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134856 (or 134850 counting only the distinct ones).

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

Adding to 22212022122 its reverse (22122021222), we get a palindrome (44334043344).

The spelling of 22212022122 in words is "twenty-two billion, two hundred twelve million, twenty-two thousand, one hundred twenty-two".