2202202110221 has 4 divisors (see below), whose sum is σ = 2203577628444. Its totient is φ = 2200826592000.

The previous prime is 2202202110191. The next prime is 2202202110233. The reversal of 2202202110221 is 1220112022022.

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 1796578333225 + 405623776996 = 1340365^2 + 636886^2 .

It is a cyclic number.

It is not a de Polignac number, because 2202202110221 - 2²² = 2202197915917 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 2202202110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202202112221) 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, 687756710 + ... + 687759911.

It is an arithmetic number, because the mean of its divisors is an integer number (550894407111).

Almost surely, 2^{2202202110221} is an apocalyptic number.

It is an amenable number.

2202202110221 is a deficient number, since it is larger than the sum of its proper divisors (1375518223).

2202202110221 is a wasteful number, since it uses less digits than its factorization.

2202202110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375518222.

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

Adding to 2202202110221 its reverse (1220112022022), we get a palindrome (3422314132243).

The spelling of 2202202110221 in words is "two trillion, two hundred two billion, two hundred two million, one hundred ten thousand, two hundred twenty-one".