202201022221221 has 32 divisors (see below), whose sum is σ = 281741367359232. Its totient is φ = 128748233940480.

The previous prime is 202201022221213. The next prime is 202201022221229. The reversal of 202201022221221 is 122122220102202.

It is an interprime number because it is at equal distance from previous prime (202201022221213) and next prime (202201022221229).

It is not a de Polignac number, because 202201022221221 - 2³ = 202201022221213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202201022221229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137044651 + ... + 138512231.

It is an arithmetic number, because the mean of its divisors is an integer number (8804417729976).

Almost surely, 2^{202201022221221} is an apocalyptic number.

It is an amenable number.

202201022221221 is a deficient number, since it is larger than the sum of its proper divisors (79540345138011).

202201022221221 is a wasteful number, since it uses less digits than its factorization.

202201022221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470573.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 202201022221221 its reverse (122122220102202), we get a palindrome (324323242323423).

The spelling of 202201022221221 in words is "two hundred two trillion, two hundred one billion, twenty-two million, two hundred twenty-one thousand, two hundred twenty-one".