202221110122221 has 16 divisors (see below), whose sum is σ = 281525970741120. Its totient is φ = 128872447334400.

The previous prime is 202221110122153. The next prime is 202221110122247. The reversal of 202221110122221 is 122221011122202.

It is not a de Polignac number, because 202221110122221 - 2³⁵ = 202186750383853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221110122261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 910622580 + ... + 910844621.

It is an arithmetic number, because the mean of its divisors is an integer number (17595373171320).

Almost surely, 2^{202221110122221} is an apocalyptic number.

It is an amenable number.

202221110122221 is a deficient number, since it is larger than the sum of its proper divisors (79304860618899).

202221110122221 is a wasteful number, since it uses less digits than its factorization.

202221110122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821468836.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 202221110122221 its reverse (122221011122202), we get a palindrome (324442121244423).

The spelling of 202221110122221 in words is "two hundred two trillion, two hundred twenty-one billion, one hundred ten million, one hundred twenty-two thousand, two hundred twenty-one".