102100200102101 has 4 divisors (see below), whose sum is σ = 108106094225772. Its totient is φ = 96094305978432.

The previous prime is 102100200102097. The next prime is 102100200102119. The reversal of 102100200102101 is 101201002001201.

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 42859870095025 + 59240330007076 = 6546745^2 + 7696774^2 .

It is a cyclic number.

It is not a de Polignac number, because 102100200102101 - 2² = 102100200102097 is a prime.

It is a super-2 number, since 2×102100200102101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102100200102191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3002947061810 + ... + 3002947061843.

It is an arithmetic number, because the mean of its divisors is an integer number (27026523556443).

Almost surely, 2^{102100200102101} is an apocalyptic number.

It is an amenable number.

102100200102101 is a deficient number, since it is larger than the sum of its proper divisors (6005894123671).

102100200102101 is an equidigital number, since it uses as much as digits as its factorization.

102100200102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6005894123670.

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

Adding to 102100200102101 its reverse (101201002001201), we get a palindrome (203301202103302).

The spelling of 102100200102101 in words is "one hundred two trillion, one hundred billion, two hundred million, one hundred two thousand, one hundred one".