22100210221 has 4 divisors (see below), whose sum is σ = 23263379200. Its totient is φ = 20937041244.

The previous prime is 22100210203. The next prime is 22100210323. The reversal of 22100210221 is 12201200122.

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.

It is a cyclic number.

It is not a de Polignac number, because 22100210221 - 2⁵ = 22100210189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100210201) 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, 581584461 + ... + 581584498.

It is an arithmetic number, because the mean of its divisors is an integer number (5815844800).

Almost surely, 2^22100210221 is an apocalyptic number.

It is an amenable number.

22100210221 is a deficient number, since it is larger than the sum of its proper divisors (1163168979).

22100210221 is a wasteful number, since it uses less digits than its factorization.

22100210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163168978.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22100210221 its reverse (12201200122), we get a palindrome (34301410343).

The spelling of 22100210221 in words is "twenty-two billion, one hundred million, two hundred ten thousand, two hundred twenty-one".