111321320201 has 32 divisors (see below), whose sum is σ = 145218705408. Its totient is φ = 82812533760.

The previous prime is 111321320161. The next prime is 111321320219. The reversal of 111321320201 is 102023123111.

It is a cyclic number.

It is not a de Polignac number, because 111321320201 - 2¹⁴ = 111321303817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 111321320201.

It is not an unprimeable number, because it can be changed into a prime (111321320501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1496771 + ... + 1569383.

It is an arithmetic number, because the mean of its divisors is an integer number (4538084544).

Almost surely, 2^111321320201 is an apocalyptic number.

It is an amenable number.

111321320201 is a deficient number, since it is larger than the sum of its proper divisors (33897385207).

111321320201 is a wasteful number, since it uses less digits than its factorization.

111321320201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73641.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 111321320201 its reverse (102023123111), we get a palindrome (213344443312).

The spelling of 111321320201 in words is "one hundred eleven billion, three hundred twenty-one million, three hundred twenty thousand, two hundred one".