201102001001221 has 2 divisors, whose sum is σ = 201102001001222. Its totient is φ = 201102001001220.

The previous prime is 201102001001191. The next prime is 201102001001263. The reversal of 201102001001221 is 122100100201102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196447863552196 + 4654137449025 = 14015986^2 + 2157345^2 .

It is a cyclic number.

It is not a de Polignac number, because 201102001001221 - 2⁹ = 201102001000709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201102001001821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100551000500610 + 100551000500611.

It is an arithmetic number, because the mean of its divisors is an integer number (100551000500611).

Almost surely, 2^{201102001001221} is an apocalyptic number.

It is an amenable number.

201102001001221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201102001001221 is an equidigital number, since it uses as much as digits as its factorization.

201102001001221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201102001001221 its reverse (122100100201102), we get a palindrome (323202101202323).

The spelling of 201102001001221 in words is "two hundred one trillion, one hundred two billion, one million, one thousand, two hundred twenty-one".