202201100221221 has 16 divisors (see below), whose sum is σ = 299685256228800. Its totient is φ = 134743101658704.

The previous prime is 202201100221193. The next prime is 202201100221247. The reversal of 202201100221221 is 122122001102202.

It is a happy number.

202201100221221 is a `hidden beast` number, since 2 + 0 + 220 + 1 + 1 + 0 + 0 + 221 + 221 = 666.

It is not a de Polignac number, because 202201100221221 - 2⁶ = 202201100221157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202201100221194 and 202201100221203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202201100220221) 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, 1600819626 + ... + 1600945931.

It is an arithmetic number, because the mean of its divisors is an integer number (18730328514300).

Almost surely, 2^{202201100221221} is an apocalyptic number.

It is an amenable number.

202201100221221 is a deficient number, since it is larger than the sum of its proper divisors (97484156007579).

202201100221221 is a wasteful number, since it uses less digits than its factorization.

202201100221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201767905 (or 3201767899 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202201100221221 its reverse (122122001102202), we get a palindrome (324323101323423).

The spelling of 202201100221221 in words is "two hundred two trillion, two hundred one billion, one hundred million, two hundred twenty-one thousand, two hundred twenty-one".