22111121201 has 4 divisors (see below), whose sum is σ = 23811976692. Its totient is φ = 20410265712.

The previous prime is 22111121171. The next prime is 22111121239. The reversal of 22111121201 is 10212111122.

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 1533505600 + 20577615601 = 39160^2 + 143449^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111121201 - 2¹⁴ = 22111104817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22111121261) 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, 850427726 + ... + 850427751.

It is an arithmetic number, because the mean of its divisors is an integer number (5952994173).

Almost surely, 2^22111121201 is an apocalyptic number.

It is an amenable number.

22111121201 is a deficient number, since it is larger than the sum of its proper divisors (1700855491).

22111121201 is a wasteful number, since it uses less digits than its factorization.

22111121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700855490.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22111121201 its reverse (10212111122), we get a palindrome (32323232323).

The spelling of 22111121201 in words is "twenty-two billion, one hundred eleven million, one hundred twenty-one thousand, two hundred one".