202200101221 has 2 divisors, whose sum is σ = 202200101222. Its totient is φ = 202200101220.

The previous prime is 202200101219. The next prime is 202200101261. The reversal of 202200101221 is 122101002202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191352878721 + 10847222500 = 437439^2 + 104150^2 .

It is a cyclic number.

It is not a de Polignac number, because 202200101221 - 2¹ = 202200101219 is a prime.

Together with 202200101219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202200101261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101100050610 + 101100050611.

It is an arithmetic number, because the mean of its divisors is an integer number (101100050611).

Almost surely, 2^202200101221 is an apocalyptic number.

It is an amenable number.

202200101221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202200101221 is an equidigital number, since it uses as much as digits as its factorization.

202200101221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202200101221 its reverse (122101002202), we get a palindrome (324301103423).

The spelling of 202200101221 in words is "two hundred two billion, two hundred million, one hundred one thousand, two hundred twenty-one".