20122422121 has 4 divisors (see below), whose sum is σ = 20771532544. Its totient is φ = 19473311700.

The previous prime is 20122422097. The next prime is 20122422149. The reversal of 20122422121 is 12122422102.

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 a cyclic number.

It is not a de Polignac number, because 20122422121 - 2⁷ = 20122421993 is a prime.

It is a super-3 number, since 3×20122422121³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122422161) 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, 324555165 + ... + 324555226.

It is an arithmetic number, because the mean of its divisors is an integer number (5192883136).

Almost surely, 2^20122422121 is an apocalyptic number.

It is an amenable number.

20122422121 is a deficient number, since it is larger than the sum of its proper divisors (649110423).

20122422121 is an equidigital number, since it uses as much as digits as its factorization.

20122422121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649110422.

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

Subtracting from 20122422121 its sum of digits (19), we obtain a palindrome (20122422102).

Adding to 20122422121 its reverse (12122422102), we get a palindrome (32244844223).

The spelling of 20122422121 in words is "twenty billion, one hundred twenty-two million, four hundred twenty-two thousand, one hundred twenty-one".