111311202321 has 16 divisors (see below), whose sum is σ = 179896893120. Its totient is φ = 67461334560.

The previous prime is 111311202307. The next prime is 111311202371. The reversal of 111311202321 is 123202113111.

111311202321 is a `hidden beast` number, since 1 + 11 + 311 + 20 + 2 + 321 = 666.

It is not a de Polignac number, because 111311202321 - 2⁹ = 111311201809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111311202294 and 111311202303.

It is not an unprimeable number, because it can be changed into a prime (111311202371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187392300 + ... + 187392893.

It is an arithmetic number, because the mean of its divisors is an integer number (11243555820).

Almost surely, 2^111311202321 is an apocalyptic number.

111311202321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111311202321 is a deficient number, since it is larger than the sum of its proper divisors (68585690799).

111311202321 is a wasteful number, since it uses less digits than its factorization.

111311202321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374785213 (or 374785207 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 111311202321 its reverse (123202113111), we get a palindrome (234513315432).

The spelling of 111311202321 in words is "one hundred eleven billion, three hundred eleven million, two hundred two thousand, three hundred twenty-one".