202201000021221 has 16 divisors (see below), whose sum is σ = 269987597233728. Its totient is φ = 134607574483200.

The previous prime is 202201000021199. The next prime is 202201000021271. The reversal of 202201000021221 is 122120000102202.

It is not a de Polignac number, because 202201000021221 - 2⁶ = 202201000021157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202201000021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202201000021271) 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, 15410701 + ... + 25335581.

It is an arithmetic number, because the mean of its divisors is an integer number (16874224827108).

Almost surely, 2^{202201000021221} is an apocalyptic number.

It is an amenable number.

202201000021221 is a deficient number, since it is larger than the sum of its proper divisors (67786597212507).

202201000021221 is an equidigital number, since it uses as much as digits as its factorization.

202201000021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9934612.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202201000021221 its reverse (122120000102202), we get a palindrome (324321000123423).

The spelling of 202201000021221 in words is "two hundred two trillion, two hundred one billion, twenty-one thousand, two hundred twenty-one".