22111222201 has 4 divisors (see below), whose sum is σ = 23072579712. Its totient is φ = 21149864692.

The previous prime is 22111222187. The next prime is 22111222213. The reversal of 22111222201 is 10222211122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10222211122 = 2 ⋅5111105561.

It is a cyclic number.

It is not a de Polignac number, because 22111222201 - 2⁵ = 22111222169 is a prime.

It is a super-2 number, since 2×22111222201² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22111222291) 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, 480678721 + ... + 480678766.

It is an arithmetic number, because the mean of its divisors is an integer number (5768144928).

Almost surely, 2^22111222201 is an apocalyptic number.

It is an amenable number.

22111222201 is a deficient number, since it is larger than the sum of its proper divisors (961357511).

22111222201 is an equidigital number, since it uses as much as digits as its factorization.

22111222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961357510.

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

Adding to 22111222201 its reverse (10222211122), we get a palindrome (32333433323).

The spelling of 22111222201 in words is "twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, two hundred one".