22112212201 has 4 divisors (see below), whose sum is σ = 22177827412. Its totient is φ = 22046596992.

The previous prime is 22112212169. The next prime is 22112212211. The reversal of 22112212201 is 10221221122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3839661225 + 18272550976 = 61965^2 + 135176^2 .

It is a cyclic number.

It is not a de Polignac number, because 22112212201 - 2⁵ = 22112212169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22112212211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32807100 + ... + 32807773.

It is an arithmetic number, because the mean of its divisors is an integer number (5544456853).

Almost surely, 2^22112212201 is an apocalyptic number.

It is an amenable number.

22112212201 is a deficient number, since it is larger than the sum of its proper divisors (65615211).

22112212201 is an equidigital number, since it uses as much as digits as its factorization.

22112212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65615210.

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

Adding to 22112212201 its reverse (10221221122), we get a palindrome (32333433323).

The spelling of 22112212201 in words is "twenty-two billion, one hundred twelve million, two hundred twelve thousand, two hundred one".