202201221021101 has 2 divisors, whose sum is σ = 202201221021102. Its totient is φ = 202201221021100.

The previous prime is 202201221021097. The next prime is 202201221021103. The reversal of 202201221021101 is 101120122102202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201779922665476 + 421298355625 = 14204926^2 + 649075^2 .

It is a cyclic number.

It is not a de Polignac number, because 202201221021101 - 2² = 202201221021097 is a prime.

Together with 202201221021103, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202201221021101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202201221021103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101100610510550 + 101100610510551.

It is an arithmetic number, because the mean of its divisors is an integer number (101100610510551).

Almost surely, 2^{202201221021101} is an apocalyptic number.

It is an amenable number.

202201221021101 is a deficient number, since it is larger than the sum of its proper divisors (1).

202201221021101 is an equidigital number, since it uses as much as digits as its factorization.

202201221021101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202201221021101 its reverse (101120122102202), we get a palindrome (303321343123303).

The spelling of 202201221021101 in words is "two hundred two trillion, two hundred one billion, two hundred twenty-one million, twenty-one thousand, one hundred one".