101312132123 has 4 divisors (see below), whose sum is σ = 101313402960. Its totient is φ = 101310861288.

The previous prime is 101312132059. The next prime is 101312132137. The reversal of 101312132123 is 321231213101.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 101312132123 - 2⁶ = 101312132059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101312132095 and 101312132104.

It is not an unprimeable number, because it can be changed into a prime (101312132183) 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, 507215 + ... + 678152.

It is an arithmetic number, because the mean of its divisors is an integer number (25328350740).

Almost surely, 2^101312132123 is an apocalyptic number.

101312132123 is a deficient number, since it is larger than the sum of its proper divisors (1270837).

101312132123 is an equidigital number, since it uses as much as digits as its factorization.

101312132123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270836.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 101312132123 its reverse (321231213101), we get a palindrome (422543345224).

The spelling of 101312132123 in words is "one hundred one billion, three hundred twelve million, one hundred thirty-two thousand, one hundred twenty-three".