111321252423 has 8 divisors (see below), whose sum is σ = 164920374000. Its totient is φ = 74214168264.

The previous prime is 111321252397. The next prime is 111321252437. The reversal of 111321252423 is 324252123111.

It is a happy number.

111321252423 is a `hidden beast` number, since 1 + 1 + 132 + 1 + 2 + 524 + 2 + 3 = 666.

It is not a de Polignac number, because 111321252423 - 2³⁰ = 110247510599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4123009349 = 111321252423 / (1 + 1 + 1 + 3 + 2 + 1 + 2 + 5 + 2 + 4 + 2 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111321252023) 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, 2061504648 + ... + 2061504701.

It is an arithmetic number, because the mean of its divisors is an integer number (20615046750).

Almost surely, 2^111321252423 is an apocalyptic number.

111321252423 is a deficient number, since it is larger than the sum of its proper divisors (53599121577).

111321252423 is an equidigital number, since it uses as much as digits as its factorization.

111321252423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4123009358 (or 4123009352 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 111321252423 its reverse (324252123111), we get a palindrome (435573375534).

The spelling of 111321252423 in words is "one hundred eleven billion, three hundred twenty-one million, two hundred fifty-two thousand, four hundred twenty-three".