2022102121221 has 108 divisors (see below), whose sum is σ = 3683460769092. Its totient is φ = 1065352684032.

The previous prime is 2022102121199. The next prime is 2022102121241. The reversal of 2022102121221 is 1221212012202.

It is a happy number.

2022102121221 is a `hidden beast` number, since 20 + 2 + 210 + 212 + 1 + 221 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 337544732196 + 1684557389025 = 580986^2 + 1297905^2 .

It is not a de Polignac number, because 2022102121221 - 2⁷ = 2022102121093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2022102121194 and 2022102121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022102121241) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 65346465 + ... + 65377401.

Almost surely, 2^{2022102121221} is an apocalyptic number.

2022102121221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2022102121221 is a deficient number, since it is larger than the sum of its proper divisors (1661358647871).

2022102121221 is a wasteful number, since it uses less digits than its factorization.

2022102121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31860 (or 31837 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2022102121221 its reverse (1221212012202), we get a palindrome (3243314133423).

The spelling of 2022102121221 in words is "two trillion, twenty-two billion, one hundred two million, one hundred twenty-one thousand, two hundred twenty-one".