101210020102091 has 2 divisors, whose sum is σ = 101210020102092. Its totient is φ = 101210020102090.

The previous prime is 101210020102069. The next prime is 101210020102109. The reversal of 101210020102091 is 190201020012101.

Together with next prime (101210020102109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101210020102091 - 2¹⁰ = 101210020101067 is a prime.

It is not a weakly prime, because it can be changed into another prime (101210020102001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605010051045 + 50605010051046.

It is an arithmetic number, because the mean of its divisors is an integer number (50605010051046).

Almost surely, 2^{101210020102091} is an apocalyptic number.

101210020102091 is a deficient number, since it is larger than the sum of its proper divisors (1).

101210020102091 is an equidigital number, since it uses as much as digits as its factorization.

101210020102091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 101210020102091 its reverse (190201020012101), we get a palindrome (291411040114192).

The spelling of 101210020102091 in words is "one hundred one trillion, two hundred ten billion, twenty million, one hundred two thousand, ninety-one".