220200022222221 has 4 divisors (see below), whose sum is σ = 293600029629632. Its totient is φ = 146800014814812.

The previous prime is 220200022222171. The next prime is 220200022222247. The reversal of 220200022222221 is 122222220002022.

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 not a de Polignac number, because 220200022222221 - 2¹⁴ = 220200022205837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220200022222721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36700003703701 + ... + 36700003703706.

It is an arithmetic number, because the mean of its divisors is an integer number (73400007407408).

Almost surely, 2^{220200022222221} is an apocalyptic number.

It is an amenable number.

220200022222221 is a deficient number, since it is larger than the sum of its proper divisors (73400007407411).

220200022222221 is an equidigital number, since it uses as much as digits as its factorization.

220200022222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73400007407410.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 220200022222221 its reverse (122222220002022), we get a palindrome (342422242224243).

The spelling of 220200022222221 in words is "two hundred twenty trillion, two hundred billion, twenty-two million, two hundred twenty-two thousand, two hundred twenty-one".