2222222200021 has 16 divisors (see below), whose sum is σ = 2393776376640. Its totient is φ = 2056135536000.

The previous prime is 2222222200019. The next prime is 2222222200067. The reversal of 2222222200021 is 1200022222222.

It is a cyclic number.

It is not a de Polignac number, because 2222222200021 - 2¹ = 2222222200019 is a prime.

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 (2222222203021) 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, 10517211 + ... + 10726423.

It is an arithmetic number, because the mean of its divisors is an integer number (149611023540).

Almost surely, 2^{2222222200021} is an apocalyptic number.

It is an amenable number.

2222222200021 is a deficient number, since it is larger than the sum of its proper divisors (171554176619).

2222222200021 is a wasteful number, since it uses less digits than its factorization.

2222222200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222276.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 2222222200021 its reverse (1200022222222), we get a palindrome (3422244422243).

The spelling of 2222222200021 in words is "two trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred thousand, twenty-one".