2222222020221 has 16 divisors (see below), whose sum is σ = 3389559705728. Its totient is φ = 1268597419200.

The previous prime is 2222222020189. The next prime is 2222222020231. The reversal of 2222222020221 is 1220202222222.

It is not a de Polignac number, because 2222222020221 - 2⁵ = 2222222020189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222222020231) 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 15 ways as a sum of consecutive naturals, for example, 51800350 + ... + 51843231.

It is an arithmetic number, because the mean of its divisors is an integer number (211847481608).

Almost surely, 2^{2222222020221} is an apocalyptic number.

2222222020221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2222222020221 is a deficient number, since it is larger than the sum of its proper divisors (1167337685507).

2222222020221 is a wasteful number, since it uses less digits than its factorization.

2222222020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103644612.

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

Adding to 2222222020221 its reverse (1220202222222), we get a palindrome (3442424242443).

The spelling of 2222222020221 in words is "two trillion, two hundred twenty-two billion, two hundred twenty-two million, twenty thousand, two hundred twenty-one".