121115141511121 has 4 divisors (see below), whose sum is σ = 121115340999792. Its totient is φ = 121114942022452.

The previous prime is 121115141511103. The next prime is 121115141511179.

121115141511121 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121115141511121 - 2⁴¹ = 118916118255569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121115141511121.

It is not an unprimeable number, because it can be changed into a prime (121115141511821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98830855 + ... + 100048828.

It is an arithmetic number, because the mean of its divisors is an integer number (30278835249948).

Almost surely, 2^{121115141511121} is an apocalyptic number.

It is an amenable number.

121115141511121 is a deficient number, since it is larger than the sum of its proper divisors (199488671).

121115141511121 is an equidigital number, since it uses as much as digits as its factorization.

121115141511121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199488670.

The product of its digits is 400, while the sum is 28.

The spelling of 121115141511121 in words is "one hundred twenty-one trillion, one hundred fifteen billion, one hundred forty-one million, five hundred eleven thousand, one hundred twenty-one".