20122022121 has 12 divisors (see below), whose sum is σ = 28046576208. Its totient is φ = 12831433384.

The previous prime is 20122022087. The next prime is 20122022153. The reversal of 20122022121 is 12122022102.

It is not a de Polignac number, because 20122022121 - 2⁶ = 20122022057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20122022121.

It is not an unprimeable number, because it can be changed into a prime (20122022161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6338055 + ... + 6341228.

It is an arithmetic number, because the mean of its divisors is an integer number (2337214684).

Almost surely, 2^20122022121 is an apocalyptic number.

It is an amenable number.

20122022121 is a deficient number, since it is larger than the sum of its proper divisors (7924554087).

20122022121 is a wasteful number, since it uses less digits than its factorization.

20122022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12679332 (or 12679309 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20122022121 its reverse (12122022102), we get a palindrome (32244044223).

The spelling of 20122022121 in words is "twenty billion, one hundred twenty-two million, twenty-two thousand, one hundred twenty-one".