102111100200121 has 4 divisors (see below), whose sum is σ = 102112275910132. Its totient is φ = 102109924490112.

The previous prime is 102111100200073. The next prime is 102111100200149. The reversal of 102111100200121 is 121002001111201.

It is a happy number.

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 19567697284521 + 82543402915600 = 4423539^2 + 9085340^2 .

It is a cyclic number.

It is not a de Polignac number, because 102111100200121 - 2⁹ = 102111100199609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102111100500121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587724720 + ... + 587898433.

It is an arithmetic number, because the mean of its divisors is an integer number (25528068977533).

Almost surely, 2^{102111100200121} is an apocalyptic number.

It is an amenable number.

102111100200121 is a deficient number, since it is larger than the sum of its proper divisors (1175710011).

102111100200121 is an equidigital number, since it uses as much as digits as its factorization.

102111100200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175710010.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102111100200121 its reverse (121002001111201), we get a palindrome (223113101311322).

The spelling of 102111100200121 in words is "one hundred two trillion, one hundred eleven billion, one hundred million, two hundred thousand, one hundred twenty-one".