111331323110421 has 32 divisors (see below), whose sum is σ = 167064248055040. Its totient is φ = 74179668520800.

The previous prime is 111331323110411. The next prime is 111331323110461. The reversal of 111331323110421 is 124011323133111.

111331323110421 is a `hidden beast` number, since 1 + 1 + 1 + 3 + 3 + 1 + 3 + 231 + 1 + 0 + 421 = 666.

It is not a de Polignac number, because 111331323110421 - 2⁵ = 111331323110389 is a prime.

It is a super-2 number, since 2×111331323110421² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111331323110411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10193905 + ... + 18071478.

It is an arithmetic number, because the mean of its divisors is an integer number (5220757751720).

Almost surely, 2^{111331323110421} is an apocalyptic number.

It is an amenable number.

111331323110421 is a deficient number, since it is larger than the sum of its proper divisors (55732924944619).

111331323110421 is an frugal number, since it uses more digits than its factorization.

111331323110421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28267205 (or 28267187 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

Adding to 111331323110421 its reverse (124011323133111), we get a palindrome (235342646243532).

The spelling of 111331323110421 in words is "one hundred eleven trillion, three hundred thirty-one billion, three hundred twenty-three million, one hundred ten thousand, four hundred twenty-one".