22200112220221 has 16 divisors (see below), whose sum is σ = 25166296939840. Its totient is φ = 19413726140160.

The previous prime is 22200112220203. The next prime is 22200112220267. The reversal of 22200112220221 is 12202221100222.

It is a cyclic number.

It is not a de Polignac number, because 22200112220221 - 2²³ = 22200103831613 is a prime.

It is a super-4 number, since 4×22200112220221⁴ (a number of 54 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200112220201) 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, 52370506 + ... + 52792708.

It is an arithmetic number, because the mean of its divisors is an integer number (1572893558740).

Almost surely, 2^{22200112220221} is an apocalyptic number.

It is an amenable number.

22200112220221 is a deficient number, since it is larger than the sum of its proper divisors (2966184719619).

22200112220221 is a wasteful number, since it uses less digits than its factorization.

22200112220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635116.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22200112220221 its reverse (12202221100222), we get a palindrome (34402333320443).

The spelling of 22200112220221 in words is "twenty-two trillion, two hundred billion, one hundred twelve million, two hundred twenty thousand, two hundred twenty-one".