111201111321 has 16 divisors (see below), whose sum is σ = 156452964480. Its totient is φ = 70114098560.

The previous prime is 111201111319. The next prime is 111201111323. The reversal of 111201111321 is 123111102111.

It is an interprime number because it is at equal distance from previous prime (111201111319) and next prime (111201111323).

It is a cyclic number.

It is not a de Polignac number, because 111201111321 - 2¹ = 111201111319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111201111321.

It is not an unprimeable number, because it can be changed into a prime (111201111323) 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 15 ways as a sum of consecutive naturals, for example, 9047850 + ... + 9060131.

It is an arithmetic number, because the mean of its divisors is an integer number (9778310280).

Almost surely, 2^111201111321 is an apocalyptic number.

It is an amenable number.

111201111321 is a deficient number, since it is larger than the sum of its proper divisors (45251853159).

111201111321 is a wasteful number, since it uses less digits than its factorization.

111201111321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18108096.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 111201111321 its reverse (123111102111), we get a palindrome (234312213432).

The spelling of 111201111321 in words is "one hundred eleven billion, two hundred one million, one hundred eleven thousand, three hundred twenty-one".