22102020121 has 16 divisors (see below), whose sum is σ = 23037145600. Its totient is φ = 21181564800.

The previous prime is 22102020103. The next prime is 22102020151. The reversal of 22102020121 is 12102020122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22102020121 - 2¹⁵ = 22101987353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22102020151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1756111 + ... + 1768651.

It is an arithmetic number, because the mean of its divisors is an integer number (1439821600).

Almost surely, 2^22102020121 is an apocalyptic number.

It is an amenable number.

22102020121 is a deficient number, since it is larger than the sum of its proper divisors (935125479).

22102020121 is a wasteful number, since it uses less digits than its factorization.

22102020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13120.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22102020121 its reverse (12102020122), we get a palindrome (34204040243).

Subtracting from 22102020121 its reverse (12102020122), we obtain a palindrome (9999999999).

The spelling of 22102020121 in words is "twenty-two billion, one hundred two million, twenty thousand, one hundred twenty-one".