111121221013 has 8 divisors (see below), whose sum is σ = 121254192576. Its totient is φ = 100993423200.

The previous prime is 111121221007. The next prime is 111121221161. The reversal of 111121221013 is 310122121111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111121221013 - 2⁹ = 111121220501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121228013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1248456 + ... + 1334497.

It is an arithmetic number, because the mean of its divisors is an integer number (15156774072).

Almost surely, 2^111121221013 is an apocalyptic number.

It is an amenable number.

111121221013 is a deficient number, since it is larger than the sum of its proper divisors (10132971563).

111121221013 is a wasteful number, since it uses less digits than its factorization.

111121221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586875.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111121221013 its reverse (310122121111), we get a palindrome (421243342124).

The spelling of 111121221013 in words is "one hundred eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, thirteen".