202101212102221 has 8 divisors (see below), whose sum is σ = 206602712179200. Its totient is φ = 197635580552160.

The previous prime is 202101212102183. The next prime is 202101212102303. The reversal of 202101212102221 is 122201212101202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202101212102221 - 2⁷ = 202101212102093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202101212106221) 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 7 ways as a sum of consecutive naturals, for example, 8967120336 + ... + 8967142873.

It is an arithmetic number, because the mean of its divisors is an integer number (25825339022400).

Almost surely, 2^{202101212102221} is an apocalyptic number.

It is an amenable number.

202101212102221 is a deficient number, since it is larger than the sum of its proper divisors (4501500076979).

202101212102221 is a wasteful number, since it uses less digits than its factorization.

202101212102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17934263459.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 202101212102221 its reverse (122201212101202), we get a palindrome (324302424203423).

The spelling of 202101212102221 in words is "two hundred two trillion, one hundred one billion, two hundred twelve million, one hundred two thousand, two hundred twenty-one".