22021121122 has 64 divisors (see below), whose sum is σ = 46959139584. Its totient is φ = 7453808640.

The previous prime is 22021121107. The next prime is 22021121123. The reversal of 22021121122 is 22112112022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22021121096 and 22021121105.

It is not an unprimeable number, because it can be changed into a prime (22021121123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 289483 + ... + 357550.

It is an arithmetic number, because the mean of its divisors is an integer number (733736556).

Almost surely, 2^22021121122 is an apocalyptic number.

22021121122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22021121122 is an abundant number, since it is smaller than the sum of its proper divisors (24938018462).

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

22021121122 is a wasteful number, since it uses less digits than its factorization.

22021121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647083.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22021121122 its reverse (22112112022), we get a palindrome (44133233144).

The spelling of 22021121122 in words is "twenty-two billion, twenty-one million, one hundred twenty-one thousand, one hundred twenty-two".