22112120121 has 48 divisors (see below), whose sum is σ = 37933074816. Its totient is φ = 11156352768.

The previous prime is 22112120119. The next prime is 22112120131. The reversal of 22112120121 is 12102121122.

It is not a de Polignac number, because 22112120121 - 2¹ = 22112120119 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22112120121.

It is not an unprimeable number, because it can be changed into a prime (22112120131) 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 47 ways as a sum of consecutive naturals, for example, 67861 + ... + 220973.

It is an arithmetic number, because the mean of its divisors is an integer number (790272392).

Almost surely, 2^22112120121 is an apocalyptic number.

22112120121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22112120121 is a deficient number, since it is larger than the sum of its proper divisors (15820954695).

22112120121 is a wasteful number, since it uses less digits than its factorization.

22112120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153182 (or 153159 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22112120121 its reverse (12102121122), we get a palindrome (34214241243).

The spelling of 22112120121 in words is "twenty-two billion, one hundred twelve million, one hundred twenty thousand, one hundred twenty-one".