22100001211201 has 4 divisors (see below), whose sum is σ = 22327836275332. Its totient is φ = 21872166147072.

The previous prime is 22100001211157. The next prime is 22100001211213. The reversal of 22100001211201 is 10211210000122.

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 8606126304400 + 13493874906801 = 2933620^2 + 3673401^2 .

It is a cyclic number.

It is not a de Polignac number, because 22100001211201 - 2¹⁵ = 22100001178433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22100001211601) 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 3 ways as a sum of consecutive naturals, for example, 113917531920 + ... + 113917532113.

It is an arithmetic number, because the mean of its divisors is an integer number (5581959068833).

Almost surely, 2^{22100001211201} is an apocalyptic number.

It is an amenable number.

22100001211201 is a deficient number, since it is larger than the sum of its proper divisors (227835064131).

22100001211201 is an equidigital number, since it uses as much as digits as its factorization.

22100001211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227835064130.

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

Adding to 22100001211201 its reverse (10211210000122), we get a palindrome (32311211211323).

The spelling of 22100001211201 in words is "twenty-two trillion, one hundred billion, one million, two hundred eleven thousand, two hundred one".