20221022121 has 16 divisors (see below), whose sum is σ = 27053779584. Its totient is φ = 13434511104.

The previous prime is 20221022077. The next prime is 20221022141. The reversal of 20221022121 is 12122012202.

It is a de Polignac number, because none of the positive numbers 2^k-20221022121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20221022121.

It is not an unprimeable number, because it can be changed into a prime (20221022141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3593316 + ... + 3598938.

It is an arithmetic number, because the mean of its divisors is an integer number (1690861224).

Almost surely, 2^20221022121 is an apocalyptic number.

It is an amenable number.

20221022121 is a deficient number, since it is larger than the sum of its proper divisors (6832757463).

20221022121 is a wasteful number, since it uses less digits than its factorization.

20221022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9520.

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

Adding to 20221022121 its reverse (12122012202), we get a palindrome (32343034323).

The spelling of 20221022121 in words is "twenty billion, two hundred twenty-one million, twenty-two thousand, one hundred twenty-one".