111241313121 has 16 divisors (see below), whose sum is σ = 153445714560. Its totient is φ = 71599207680.

The previous prime is 111241313111. The next prime is 111241313129. The reversal of 111241313121 is 121313142111.

It is a happy number.

It is not a de Polignac number, because 111241313121 - 2¹¹ = 111241311073 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111241313129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1978761 + ... + 2034201.

It is an arithmetic number, because the mean of its divisors is an integer number (9590357160).

Almost surely, 2^111241313121 is an apocalyptic number.

It is an amenable number.

111241313121 is a deficient number, since it is larger than the sum of its proper divisors (42204401439).

111241313121 is a wasteful number, since it uses less digits than its factorization.

111241313121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78536.

The product of its digits is 144, while the sum is 21.

Adding to 111241313121 its reverse (121313142111), we get a palindrome (232554455232).

The spelling of 111241313121 in words is "one hundred eleven billion, two hundred forty-one million, three hundred thirteen thousand, one hundred twenty-one".