2022021220121 has 8 divisors (see below), whose sum is σ = 2446815594240. Its totient is φ = 1631210395968.

The previous prime is 2022021220099. The next prime is 2022021220129. The reversal of 2022021220121 is 1210221202202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2022021220121 - 2²² = 2022017025817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2022021220121.

It is not an unprimeable number, because it can be changed into a prime (2022021220129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8495887361 + ... + 8495887598.

It is an arithmetic number, because the mean of its divisors is an integer number (305851949280).

Almost surely, 2^{2022021220121} is an apocalyptic number.

It is an amenable number.

2022021220121 is a deficient number, since it is larger than the sum of its proper divisors (424794374119).

2022021220121 is a wasteful number, since it uses less digits than its factorization.

2022021220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16991774983.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2022021220121 its reverse (1210221202202), we get a palindrome (3232242422323).

The spelling of 2022021220121 in words is "two trillion, twenty-two billion, twenty-one million, two hundred twenty thousand, one hundred twenty-one".