22021110002221 has 8 divisors (see below), whose sum is σ = 24041132371584. Its totient is φ = 20004104845920.

The previous prime is 22021110002189. The next prime is 22021110002257. The reversal of 22021110002221 is 12220001112022.

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 22021110002221 - 2⁵ = 22021110002189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22021110002195 and 22021110002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021110002261) 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, 754288000 + ... + 754317193.

It is an arithmetic number, because the mean of its divisors is an integer number (3005141546448).

Almost surely, 2^{22021110002221} is an apocalyptic number.

It is an amenable number.

22021110002221 is a deficient number, since it is larger than the sum of its proper divisors (2020022369363).

22021110002221 is a wasteful number, since it uses less digits than its factorization.

22021110002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508606531.

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

Adding to 22021110002221 its reverse (12220001112022), we get a palindrome (34241111114243).

The spelling of 22021110002221 in words is "twenty-two trillion, twenty-one billion, one hundred ten million, two thousand, two hundred twenty-one".