2202202112021 has 4 divisors (see below), whose sum is σ = 2214931604172. Its totient is φ = 2189472619872.

The previous prime is 2202202111939. The next prime is 2202202112041. The reversal of 2202202112021 is 1202112022022.

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 2145524787121 + 56677324900 = 1464761^2 + 238070^2 .

It is a cyclic number.

It is not a de Polignac number, because 2202202112021 - 2¹⁸ = 2202201849877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202202112041) 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, 6364745816 + ... + 6364746161.

It is an arithmetic number, because the mean of its divisors is an integer number (553732901043).

Almost surely, 2^{2202202112021} is an apocalyptic number.

It is an amenable number.

2202202112021 is a deficient number, since it is larger than the sum of its proper divisors (12729492151).

2202202112021 is a wasteful number, since it uses less digits than its factorization.

2202202112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12729492150.

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

Adding to 2202202112021 its reverse (1202112022022), we get a palindrome (3404314134043).

The spelling of 2202202112021 in words is "two trillion, two hundred two billion, two hundred two million, one hundred twelve thousand, twenty-one".