20222020120121 has 4 divisors (see below), whose sum is σ = 20222671025700. Its totient is φ = 20221369214544.

The previous prime is 20222020120063. The next prime is 20222020120147. The reversal of 20222020120121 is 12102102022202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16957421607721 + 3264598512400 = 4117939^2 + 1806820^2 .

It is a cyclic number.

It is not a de Polignac number, because 20222020120121 - 2³⁸ = 19947142213177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20222020120121.

It is not an unprimeable number, because it can be changed into a prime (20222020122121) 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, 325406186 + ... + 325468323.

It is an arithmetic number, because the mean of its divisors is an integer number (5055667756425).

Almost surely, 2^{20222020120121} is an apocalyptic number.

It is an amenable number.

20222020120121 is a deficient number, since it is larger than the sum of its proper divisors (650905579).

20222020120121 is an equidigital number, since it uses as much as digits as its factorization.

20222020120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650905578.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20222020120121 its reverse (12102102022202), we get a palindrome (32324122142323).

The spelling of 20222020120121 in words is "twenty trillion, two hundred twenty-two billion, twenty million, one hundred twenty thousand, one hundred twenty-one".