111355330121 has 32 divisors (see below), whose sum is σ = 132296343552. Its totient is φ = 91759953600.

The previous prime is 111355330117. The next prime is 111355330157. The reversal of 111355330121 is 121033553111.

It is a happy number.

It is not a de Polignac number, because 111355330121 - 2² = 111355330117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111355330621) 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, 4206890 + ... + 4233276.

It is an arithmetic number, because the mean of its divisors is an integer number (4134260736).

Almost surely, 2^111355330121 is an apocalyptic number.

It is an amenable number.

111355330121 is a deficient number, since it is larger than the sum of its proper divisors (20941013431).

111355330121 is a wasteful number, since it uses less digits than its factorization.

111355330121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26669.

The product of its (nonzero) digits is 1350, while the sum is 26.

Adding to 111355330121 its reverse (121033553111), we get a palindrome (232388883232).

The spelling of 111355330121 in words is "one hundred eleven billion, three hundred fifty-five million, three hundred thirty thousand, one hundred twenty-one".