111132123401 has 24 divisors (see below), whose sum is σ = 122682855960. Its totient is φ = 100587242496.

The previous prime is 111132123379. The next prime is 111132123457. The reversal of 111132123401 is 104321231111.

It can be written as a sum of positive squares in 12 ways, for example, as 44152095376 + 66980028025 = 210124^2 + 258805^2 .

It is not a de Polignac number, because 111132123401 - 2¹⁰ = 111132122377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111132123491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22183985 + ... + 22188993.

It is an arithmetic number, because the mean of its divisors is an integer number (5111785665).

Almost surely, 2^111132123401 is an apocalyptic number.

It is an amenable number.

111132123401 is a deficient number, since it is larger than the sum of its proper divisors (11550732559).

111132123401 is a wasteful number, since it uses less digits than its factorization.

111132123401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7565 (or 7552 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 111132123401 its reverse (104321231111), we get a palindrome (215453354512).

The spelling of 111132123401 in words is "one hundred eleven billion, one hundred thirty-two million, one hundred twenty-three thousand, four hundred one".