12078901 has 4 divisors (see below), whose sum is σ = 12088512. Its totient is φ = 12069292.

The previous prime is 12078883. The next prime is 12078919. The reversal of 12078901 is 10987021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (12078883) and next prime (12078919).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12078901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12078901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12078971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2575 + ... + 5548.

It is an arithmetic number, because the mean of its divisors is an integer number (3022128).

Almost surely, 2^12078901 is an apocalyptic number.

It is an amenable number.

12078901 is a deficient number, since it is larger than the sum of its proper divisors (9611).

12078901 is an equidigital number, since it uses as much as digits as its factorization.

12078901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9610.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 12078901 is about 3475.4713349415. The cubic root of 12078901 is about 229.4435255469.

The spelling of 12078901 in words is "twelve million, seventy-eight thousand, nine hundred one".