22112001121 has 12 divisors (see below), whose sum is σ = 25762923840. Its totient is φ = 18923080680.

The previous prime is 22112001101. The next prime is 22112001137. The reversal of 22112001121 is 12110021122.

It is not a de Polignac number, because 22112001121 - 2⁷ = 22112000993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22112001101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326661 + ... + 388498.

It is an arithmetic number, because the mean of its divisors is an integer number (2146910320).

Almost surely, 2^22112001121 is an apocalyptic number.

It is an amenable number.

22112001121 is a deficient number, since it is larger than the sum of its proper divisors (3650922719).

22112001121 is an equidigital number, since it uses as much as digits as its factorization.

22112001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715804 (or 715797 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22112001121 its reverse (12110021122), we get a palindrome (34222022243).

The spelling of 22112001121 in words is "twenty-two billion, one hundred twelve million, one thousand, one hundred twenty-one".