2122022220121 has 4 divisors (see below), whose sum is σ = 2122029156352. Its totient is φ = 2122015283892.

The previous prime is 2122022220103. The next prime is 2122022220139. The reversal of 2122022220121 is 1210222202212.

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 an interprime number because it is at equal distance from previous prime (2122022220103) and next prime (2122022220139).

It is a cyclic number.

It is not a de Polignac number, because 2122022220121 - 2¹⁷ = 2122022089049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122022220161) 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, 2986965 + ... + 3628498.

It is an arithmetic number, because the mean of its divisors is an integer number (530507289088).

Almost surely, 2^{2122022220121} is an apocalyptic number.

It is an amenable number.

2122022220121 is a deficient number, since it is larger than the sum of its proper divisors (6936231).

2122022220121 is an equidigital number, since it uses as much as digits as its factorization.

2122022220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6936230.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2122022220121 its reverse (1210222202212), we get a palindrome (3332244422333).

The spelling of 2122022220121 in words is "two trillion, one hundred twenty-two billion, twenty-two million, two hundred twenty thousand, one hundred twenty-one".