101201120102021 has 2 divisors, whose sum is σ = 101201120102022. Its totient is φ = 101201120102020.

The previous prime is 101201120101987. The next prime is 101201120102023. The reversal of 101201120102021 is 120201021102101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97832375550625 + 3368744551396 = 9891025^2 + 1835414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101201120102021 is a prime.

Together with 101201120102023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 101201120101987 and 101201120102005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101201120102023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50600560051010 + 50600560051011.

It is an arithmetic number, because the mean of its divisors is an integer number (50600560051011).

Almost surely, 2^{101201120102021} is an apocalyptic number.

It is an amenable number.

101201120102021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101201120102021 is an equidigital number, since it uses as much as digits as its factorization.

101201120102021 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 14.

Adding to 101201120102021 its reverse (120201021102101), we get a palindrome (221402141204122).

The spelling of 101201120102021 in words is "one hundred one trillion, two hundred one billion, one hundred twenty million, one hundred two thousand, twenty-one".