12401120111 has 4 divisors (see below), whose sum is σ = 12604417224. Its totient is φ = 12197823000.

The previous prime is 12401120107. The next prime is 12401120117. The reversal of 12401120111 is 11102110421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11102110421 = 41 ⋅270783181.

It is a cyclic number.

It is not a de Polignac number, because 12401120111 - 2² = 12401120107 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 (12401120117) 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, 101648465 + ... + 101648586.

It is an arithmetic number, because the mean of its divisors is an integer number (3151104306).

Almost surely, 2^12401120111 is an apocalyptic number.

12401120111 is a deficient number, since it is larger than the sum of its proper divisors (203297113).

12401120111 is an equidigital number, since it uses as much as digits as its factorization.

12401120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203297112.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12401120111 its reverse (11102110421), we get a palindrome (23503230532).

The spelling of 12401120111 in words is "twelve billion, four hundred one million, one hundred twenty thousand, one hundred eleven".