22152121112 has 64 divisors (see below), whose sum is σ = 48037155840. Its totient is φ = 9480931200.

The previous prime is 22152121027. The next prime is 22152121171. The reversal of 22152121112 is 21112125122.

It is a super-2 number, since 2×22152121112² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8798 + ... + 210669.

It is an arithmetic number, because the mean of its divisors is an integer number (750580560).

Almost surely, 2^22152121112 is an apocalyptic number.

22152121112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22152121112 is an abundant number, since it is smaller than the sum of its proper divisors (25885034728).

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

22152121112 is a wasteful number, since it uses less digits than its factorization.

22152121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219552 (or 219548 counting only the distinct ones).

The product of its digits is 160, while the sum is 20.

Adding to 22152121112 its reverse (21112125122), we get a palindrome (43264246234).

The spelling of 22152121112 in words is "twenty-two billion, one hundred fifty-two million, one hundred twenty-one thousand, one hundred twelve".