12101111983 has 4 divisors (see below), whose sum is σ = 12102363000. Its totient is φ = 12099860968.

The previous prime is 12101111963. The next prime is 12101112041. The reversal of 12101111983 is 38911110121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12101111983 is a prime.

It is a super-2 number, since 2×12101111983² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101111963) 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, 610885 + ... + 630382.

It is an arithmetic number, because the mean of its divisors is an integer number (3025590750).

Almost surely, 2^12101111983 is an apocalyptic number.

12101111983 is a deficient number, since it is larger than the sum of its proper divisors (1251017).

12101111983 is an equidigital number, since it uses as much as digits as its factorization.

12101111983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251016.

The product of its (nonzero) digits is 432, while the sum is 28.

The spelling of 12101111983 in words is "twelve billion, one hundred one million, one hundred eleven thousand, nine hundred eighty-three".