12111972841 has 8 divisors (see below), whose sum is σ = 12398918400. Its totient is φ = 11825266992.

The previous prime is 12111972839. The next prime is 12111972863. The reversal of 12111972841 is 14827911121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12111972841 - 2¹ = 12111972839 is a prime.

It is a super-2 number, since 2×12111972841² (a number of 21 digits) contains 22 as substring.

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 12111972841.

It is not an unprimeable number, because it can be changed into a prime (12111972871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44451 + ... + 161863.

It is an arithmetic number, because the mean of its divisors is an integer number (1549864800).

Almost surely, 2^12111972841 is an apocalyptic number.

It is an amenable number.

12111972841 is a deficient number, since it is larger than the sum of its proper divisors (286945559).

12111972841 is a wasteful number, since it uses less digits than its factorization.

12111972841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119855.

The product of its digits is 8064, while the sum is 37.

The spelling of 12111972841 in words is "twelve billion, one hundred eleven million, nine hundred seventy-two thousand, eight hundred forty-one".