2022121222221 has 4 divisors (see below), whose sum is σ = 2696161629632. Its totient is φ = 1348080814812.

The previous prime is 2022121222201. The next prime is 2022121222229. The reversal of 2022121222221 is 1222221212202.

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 2022121222221 - 2¹⁵ = 2022121189453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022121222229) 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, 337020203701 + ... + 337020203706.

It is an arithmetic number, because the mean of its divisors is an integer number (674040407408).

Almost surely, 2^{2022121222221} is an apocalyptic number.

It is an amenable number.

2022121222221 is a deficient number, since it is larger than the sum of its proper divisors (674040407411).

2022121222221 is an equidigital number, since it uses as much as digits as its factorization.

2022121222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674040407410.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2022121222221 its reverse (1222221212202), we get a palindrome (3244342434423).

The spelling of 2022121222221 in words is "two trillion, twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-one".