111201102121 has 8 divisors (see below), whose sum is σ = 116730762624. Its totient is φ = 105729344160.

The previous prime is 111201102109. The next prime is 111201102143. The reversal of 111201102121 is 121201102111.

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 a de Polignac number, because none of the positive numbers 2^k-111201102121 is a prime.

It is a super-2 number, since 2×111201102121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111201102161) 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, 14471700 + ... + 14479381.

It is an arithmetic number, because the mean of its divisors is an integer number (14591345328).

Almost surely, 2^111201102121 is an apocalyptic number.

It is an amenable number.

111201102121 is a deficient number, since it is larger than the sum of its proper divisors (5529660503).

111201102121 is a wasteful number, since it uses less digits than its factorization.

111201102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28951271.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111201102121 its reverse (121201102111), we get a palindrome (232402204232).

The spelling of 111201102121 in words is "one hundred eleven billion, two hundred one million, one hundred two thousand, one hundred twenty-one".