111231424321 has 4 divisors (see below), whose sum is σ = 111233266992. Its totient is φ = 111229581652.

The previous prime is 111231424313. The next prime is 111231424351. The reversal of 111231424321 is 123424132111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111231424321 - 2³ = 111231424313 is a prime.

It is a super-2 number, since 2×111231424321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111231424351) 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, 827611 + ... + 952576.

It is an arithmetic number, because the mean of its divisors is an integer number (27808316748).

Almost surely, 2^111231424321 is an apocalyptic number.

It is an amenable number.

111231424321 is a deficient number, since it is larger than the sum of its proper divisors (1842671).

111231424321 is an equidigital number, since it uses as much as digits as its factorization.

111231424321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842670.

The product of its digits is 1152, while the sum is 25.

Adding to 111231424321 its reverse (123424132111), we get a palindrome (234655556432).

The spelling of 111231424321 in words is "one hundred eleven billion, two hundred thirty-one million, four hundred twenty-four thousand, three hundred twenty-one".