22001102221 has 8 divisors (see below), whose sum is σ = 25186956480. Its totient is φ = 18825957888.

The previous prime is 22001102197. The next prime is 22001102251. The reversal of 22001102221 is 12220110022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22001102221 - 2¹³ = 22001094029 is a prime.

It is a super-2 number, since 2×22001102221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001102251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2673076 + ... + 2681293.

It is an arithmetic number, because the mean of its divisors is an integer number (3148369560).

Almost surely, 2^22001102221 is an apocalyptic number.

It is an amenable number.

22001102221 is a deficient number, since it is larger than the sum of its proper divisors (3185854259).

22001102221 is an equidigital number, since it uses as much as digits as its factorization.

22001102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5354963.

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

Adding to 22001102221 its reverse (12220110022), we get a palindrome (34221212243).

The spelling of 22001102221 in words is "twenty-two billion, one million, one hundred two thousand, two hundred twenty-one".