121100310121 has 16 divisors (see below), whose sum is σ = 141360293376. Its totient is φ = 101580788736.

The previous prime is 121100310073. The next prime is 121100310151. The reversal of 121100310121 is 121013001121.

It is a happy number.

It is not a de Polignac number, because 121100310121 - 2¹¹ = 121100308073 is a prime.

It is a super-2 number, since 2×121100310121² (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 (121100310151) 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, 4835985 + ... + 4860961.

It is an arithmetic number, because the mean of its divisors is an integer number (8835018336).

Almost surely, 2^121100310121 is an apocalyptic number.

It is an amenable number.

121100310121 is a deficient number, since it is larger than the sum of its proper divisors (20259983255).

121100310121 is a wasteful number, since it uses less digits than its factorization.

121100310121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39768.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 121100310121 its reverse (121013001121), we get a palindrome (242113311242).

The spelling of 121100310121 in words is "one hundred twenty-one billion, one hundred million, three hundred ten thousand, one hundred twenty-one".