111143231401321 has 32 divisors (see below), whose sum is σ = 127857976125440. Its totient is φ = 94640374857600.

The previous prime is 111143231401309. The next prime is 111143231401361. The reversal of 111143231401321 is 123104132341111.

It is a cyclic number.

It is not a de Polignac number, because 111143231401321 - 2⁹ = 111143231400809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111143231401321.

It is not an unprimeable number, because it can be changed into a prime (111143231401361) 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, 800437861 + ... + 800576701.

It is an arithmetic number, because the mean of its divisors is an integer number (3995561753920).

Almost surely, 2^{111143231401321} is an apocalyptic number.

It is an amenable number.

111143231401321 is a deficient number, since it is larger than the sum of its proper divisors (16714744724119).

111143231401321 is a wasteful number, since it uses less digits than its factorization.

111143231401321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140405.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 111143231401321 its reverse (123104132341111), we get a palindrome (234247363742432).

The spelling of 111143231401321 in words is "one hundred eleven trillion, one hundred forty-three billion, two hundred thirty-one million, four hundred one thousand, three hundred twenty-one".