22111211201 has 4 divisors (see below), whose sum is σ = 22112485332. Its totient is φ = 22109937072.

The previous prime is 22111211197. The next prime is 22111211203. The reversal of 22111211201 is 10211211122.

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 213130801 + 21898080400 = 14599^2 + 147980^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111211201 - 2² = 22111211197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22111211203) 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, 610670 + ... + 645863.

It is an arithmetic number, because the mean of its divisors is an integer number (5528121333).

Almost surely, 2^22111211201 is an apocalyptic number.

It is an amenable number.

22111211201 is a deficient number, since it is larger than the sum of its proper divisors (1274131).

22111211201 is a wasteful number, since it uses less digits than its factorization.

22111211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274130.

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

Adding to 22111211201 its reverse (10211211122), we get a palindrome (32322422323).

The spelling of 22111211201 in words is "twenty-two billion, one hundred eleven million, two hundred eleven thousand, two hundred one".