102121010123 has 16 divisors (see below), whose sum is σ = 115017200640. Its totient is φ = 89827874400.

The previous prime is 102121010119. The next prime is 102121010179. The reversal of 102121010123 is 321010121201.

It is not a de Polignac number, because 102121010123 - 2² = 102121010119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102121010098 and 102121010107.

It is not an unprimeable number, because it can be changed into a prime (102121010023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2429933 + ... + 2471601.

It is an arithmetic number, because the mean of its divisors is an integer number (7188575040).

Almost surely, 2^102121010123 is an apocalyptic number.

102121010123 is a deficient number, since it is larger than the sum of its proper divisors (12896190517).

102121010123 is a wasteful number, since it uses less digits than its factorization.

102121010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48898.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 102121010123 its reverse (321010121201), we get a palindrome (423131131324).

The spelling of 102121010123 in words is "one hundred two billion, one hundred twenty-one million, ten thousand, one hundred twenty-three".