2202020022121 has 4 divisors (see below), whose sum is σ = 2203494919812. Its totient is φ = 2200545124432.

The previous prime is 2202020022119. The next prime is 2202020022199. The reversal of 2202020022121 is 1212200202022.

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 1937886726400 + 264133295721 = 1392080^2 + 513939^2 .

It is a cyclic number.

It is not a de Polignac number, because 2202020022121 - 2¹ = 2202020022119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2202020022095 and 2202020022104.

It is not an unprimeable number, because it can be changed into a prime (2202020026121) 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, 737446606 + ... + 737449591.

It is an arithmetic number, because the mean of its divisors is an integer number (550873729953).

Almost surely, 2^{2202020022121} is an apocalyptic number.

It is an amenable number.

2202020022121 is a deficient number, since it is larger than the sum of its proper divisors (1474897691).

2202020022121 is a wasteful number, since it uses less digits than its factorization.

2202020022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474897690.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2202020022121 its reverse (1212200202022), we get a palindrome (3414220224143).

The spelling of 2202020022121 in words is "two trillion, two hundred two billion, twenty million, twenty-two thousand, one hundred twenty-one".