111231323201 has 32 divisors (see below), whose sum is σ = 122081955840. Its totient is φ = 101010482496.

The previous prime is 111231323131. The next prime is 111231323219. The reversal of 111231323201 is 102323132111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111231323201 - 2¹⁸ = 111231061057 is a prime.

It is a super-2 number, since 2×111231323201² (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 (111231323251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28911860 + ... + 28915706.

It is an arithmetic number, because the mean of its divisors is an integer number (3815061120).

Almost surely, 2^111231323201 is an apocalyptic number.

It is an amenable number.

111231323201 is a deficient number, since it is larger than the sum of its proper divisors (10850632639).

111231323201 is a wasteful number, since it uses less digits than its factorization.

111231323201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4613.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 111231323201 its reverse (102323132111), we get a palindrome (213554455312).

The spelling of 111231323201 in words is "one hundred eleven billion, two hundred thirty-one million, three hundred twenty-three thousand, two hundred one".