22111100201 has 16 divisors (see below), whose sum is σ = 23495527440. Its totient is φ = 20736122880.

The previous prime is 22111100149. The next prime is 22111100203. The reversal of 22111100201 is 10200111122.

It can be written as a sum of positive squares in 8 ways, for example, as 125328025 + 21985772176 = 11195^2 + 148276^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111100201 - 2¹⁴ = 22111083817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22111100203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7279055 + ... + 7282091.

It is an arithmetic number, because the mean of its divisors is an integer number (1468470465).

Almost surely, 2^22111100201 is an apocalyptic number.

It is an amenable number.

22111100201 is a deficient number, since it is larger than the sum of its proper divisors (1384427239).

22111100201 is a wasteful number, since it uses less digits than its factorization.

22111100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4444.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 22111100201 its reverse (10200111122), we get a palindrome (32311211323).

The spelling of 22111100201 in words is "twenty-two billion, one hundred eleven million, one hundred thousand, two hundred one".