202101002101221 has 8 divisors (see below), whose sum is σ = 269499001111200. Its totient is φ = 134718502246032.

The previous prime is 202101002101169. The next prime is 202101002101231. The reversal of 202101002101221 is 122101200101202.

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

It is not a de Polignac number, because 202101002101221 - 2¹⁵ = 202101002068453 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 202101002101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202101002101231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3874758271 + ... + 3874810428.

It is an arithmetic number, because the mean of its divisors is an integer number (33687375138900).

Almost surely, 2^{202101002101221} is an apocalyptic number.

It is an amenable number.

202101002101221 is a deficient number, since it is larger than the sum of its proper divisors (67397999009979).

202101002101221 is an equidigital number, since it uses as much as digits as its factorization.

202101002101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7749577395.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 202101002101221 its reverse (122101200101202), we get a palindrome (324202202202423).

The spelling of 202101002101221 in words is "two hundred two trillion, one hundred one billion, two million, one hundred one thousand, two hundred twenty-one".