12101101391 has 4 divisors (see below), whose sum is σ = 12101484312. Its totient is φ = 12100718472.

The previous prime is 12101101373. The next prime is 12101101393. The reversal of 12101101391 is 19310110121.

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 12101101391 - 2²² = 12096907087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101101393) 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, 139325 + ... + 208838.

It is an arithmetic number, because the mean of its divisors is an integer number (3025371078).

Almost surely, 2^12101101391 is an apocalyptic number.

12101101391 is a deficient number, since it is larger than the sum of its proper divisors (382921).

12101101391 is an equidigital number, since it uses as much as digits as its factorization.

12101101391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382920.

The product of its (nonzero) digits is 54, while the sum is 20.

The spelling of 12101101391 in words is "twelve billion, one hundred one million, one hundred one thousand, three hundred ninety-one".