201121021210099 has 2 divisors, whose sum is σ = 201121021210100. Its totient is φ = 201121021210098.

The previous prime is 201121021210093. The next prime is 201121021210127. The reversal of 201121021210099 is 990012120121102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201121021210099 - 2⁴⁵ = 165936649121267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201121021210099.

It is not a weakly prime, because it can be changed into another prime (201121021210093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560510605049 + 100560510605050.

It is an arithmetic number, because the mean of its divisors is an integer number (100560510605050).

Almost surely, 2^{201121021210099} is an apocalyptic number.

201121021210099 is a deficient number, since it is larger than the sum of its proper divisors (1).

201121021210099 is an equidigital number, since it uses as much as digits as its factorization.

201121021210099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 201121021210099 in words is "two hundred one trillion, one hundred twenty-one billion, twenty-one million, two hundred ten thousand, ninety-nine".