22221122022 has 48 divisors (see below), whose sum is σ = 55287011520. Its totient is φ = 6379268400.

The previous prime is 22221121981. The next prime is 22221122071. The reversal of 22221122022 is 22022112222.

It is a super-2 number, since 2×22221122022² (a number of 21 digits) contains 22 as substring.

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 = 22221121986 and 22221122004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2949604 + ... + 2957127.

It is an arithmetic number, because the mean of its divisors is an integer number (1151812740).

Almost surely, 2^22221122022 is an apocalyptic number.

22221122022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22221122022 is an abundant number, since it is smaller than the sum of its proper divisors (33065889498).

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

22221122022 is a wasteful number, since it uses less digits than its factorization.

22221122022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5906769 (or 5906766 counting only the distinct ones).

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

Adding to 22221122022 its reverse (22022112222), we get a palindrome (44243234244).

The spelling of 22221122022 in words is "twenty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, twenty-two".