101102010200021 has 4 divisors (see below), whose sum is σ = 101102897072652. Its totient is φ = 101101123327392.

The previous prime is 101102010200017. The next prime is 101102010200029. The reversal of 101102010200021 is 120002010201101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5152423311025 + 95949586888996 = 2269895^2 + 9795386^2 .

It is a cyclic number.

It is not a de Polignac number, because 101102010200021 - 2² = 101102010200017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101102010199975 and 101102010200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101102010200029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443265296 + ... + 443493321.

It is an arithmetic number, because the mean of its divisors is an integer number (25275724268163).

Almost surely, 2^{101102010200021} is an apocalyptic number.

It is an amenable number.

101102010200021 is a deficient number, since it is larger than the sum of its proper divisors (886872631).

101102010200021 is an equidigital number, since it uses as much as digits as its factorization.

101102010200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886872630.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101102010200021 its reverse (120002010201101), we get a palindrome (221104020401122).

The spelling of 101102010200021 in words is "one hundred one trillion, one hundred two billion, ten million, two hundred thousand, twenty-one".