12403078101 has 10 divisors (see below), whose sum is σ = 18528055062. Its totient is φ = 8268718680.

The previous prime is 12403078087. The next prime is 12403078109. The reversal of 12403078101 is 10187030421.

It can be written as a sum of positive squares in only one way, i.e., 12324330225 + 78747876 = 111015^2 + 8874^2 .

It is not a de Polignac number, because 12403078101 - 2⁵ = 12403078069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403078109) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 76562130 + ... + 76562291.

Almost surely, 2^12403078101 is an apocalyptic number.

It is an amenable number.

12403078101 is a deficient number, since it is larger than the sum of its proper divisors (6124976961).

12403078101 is an equidigital number, since it uses as much as digits as its factorization.

12403078101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153124433 (or 153124424 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The spelling of 12403078101 in words is "twelve billion, four hundred three million, seventy-eight thousand, one hundred one".