202202220222221 has 16 divisors (see below), whose sum is σ = 222112678195200. Its totient is φ = 183219645560688.

The previous prime is 202202220222203. The next prime is 202202220222251. The reversal of 202202220222221 is 122222022202202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202202220222221 is a prime.

It is a super-2 number, since 2×202202220222221² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202202220222251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7837841 + ... + 21583238.

It is an arithmetic number, because the mean of its divisors is an integer number (13882042387200).

Almost surely, 2^{202202220222221} is an apocalyptic number.

It is an amenable number.

202202220222221 is a deficient number, since it is larger than the sum of its proper divisors (19910457972979).

202202220222221 is a wasteful number, since it uses less digits than its factorization.

202202220222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29436848.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 202202220222221 its reverse (122222022202202), we get a palindrome (324424242424423).

The spelling of 202202220222221 in words is "two hundred two trillion, two hundred two billion, two hundred twenty million, two hundred twenty-two thousand, two hundred twenty-one".