22222200221021 has 4 divisors (see below), whose sum is σ = 22391835337344. Its totient is φ = 22052565104700.

The previous prime is 22222200221017. The next prime is 22222200221071. The reversal of 22222200221021 is 12012200222222.

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 22222200221021 - 2² = 22222200221017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22222200220984 and 22222200221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222200221071) 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, 84817557965 + ... + 84817558226.

It is an arithmetic number, because the mean of its divisors is an integer number (5597958834336).

Almost surely, 2^{22222200221021} is an apocalyptic number.

It is an amenable number.

22222200221021 is a deficient number, since it is larger than the sum of its proper divisors (169635116323).

22222200221021 is a wasteful number, since it uses less digits than its factorization.

22222200221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169635116322.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22222200221021 its reverse (12012200222222), we get a palindrome (34234400443243).

The spelling of 22222200221021 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred million, two hundred twenty-one thousand, twenty-one".