101210020102109 has 2 divisors, whose sum is σ = 101210020102110. Its totient is φ = 101210020102108.

The previous prime is 101210020102091. The next prime is 101210020102127. The reversal of 101210020102109 is 901201020012101.

Together with previous prime (101210020102091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (101210020102091) and next prime (101210020102127).

It can be written as a sum of positive squares in only one way, i.e., 57417324166084 + 43792695936025 = 7577422^2 + 6617605^2 .

It is a cyclic number.

It is not a de Polignac number, because 101210020102109 - 2²⁴ = 101210003324893 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101210020101109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605010051054 + 50605010051055.

It is an arithmetic number, because the mean of its divisors is an integer number (50605010051055).

Almost surely, 2^{101210020102109} is an apocalyptic number.

It is an amenable number.

101210020102109 is a deficient number, since it is larger than the sum of its proper divisors (1).

101210020102109 is an equidigital number, since it uses as much as digits as its factorization.

101210020102109 is an evil number, because the sum of its binary digits is even.

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

The spelling of 101210020102109 in words is "one hundred one trillion, two hundred ten billion, twenty million, one hundred two thousand, one hundred nine".