2202020121121 has 4 divisors (see below), whose sum is σ = 2202028868500. Its totient is φ = 2202011373744.

The previous prime is 2202020121079. The next prime is 2202020121157. The reversal of 2202020121121 is 1211210202022.

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 880474448896 + 1321545672225 = 938336^2 + 1149585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2202020121121 is a prime.

It is a super-2 number, since 2×2202020121121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2202020121095 and 2202020121104.

It is not an unprimeable number, because it can be changed into a prime (2202023121121) 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, 3984546 + ... + 4503403.

It is an arithmetic number, because the mean of its divisors is an integer number (550507217125).

Almost surely, 2^{2202020121121} is an apocalyptic number.

It is an amenable number.

2202020121121 is a deficient number, since it is larger than the sum of its proper divisors (8747379).

2202020121121 is an equidigital number, since it uses as much as digits as its factorization.

2202020121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8747378.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2202020121121 its reverse (1211210202022), we get a palindrome (3413230323143).

The spelling of 2202020121121 in words is "two trillion, two hundred two billion, twenty million, one hundred twenty-one thousand, one hundred twenty-one".