111211040121 has 16 divisors (see below), whose sum is σ = 151573075200. Its totient is φ = 72497698688.

The previous prime is 111211040093. The next prime is 111211040131. The reversal of 111211040121 is 121040112111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111211040121 - 2⁵ = 111211040089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111211040121.

It is not an unprimeable number, because it can be changed into a prime (111211040131) 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, 199236 + ... + 511973.

It is an arithmetic number, because the mean of its divisors is an integer number (9473317200).

Almost surely, 2^111211040121 is an apocalyptic number.

It is an amenable number.

111211040121 is a deficient number, since it is larger than the sum of its proper divisors (40362035079).

111211040121 is a wasteful number, since it uses less digits than its factorization.

111211040121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712368.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111211040121 its reverse (121040112111), we get a palindrome (232251152232).

The spelling of 111211040121 in words is "one hundred eleven billion, two hundred eleven million, forty thousand, one hundred twenty-one".