121014205124405 has 4 divisors (see below), whose sum is σ = 145217046149292. Its totient is φ = 96811364099520.

The previous prime is 121014205124399. The next prime is 121014205124431. The reversal of 121014205124405 is 504421502410121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27465209007076 + 93548996117329 = 5240726^2 + 9672073^2 .

It is not a de Polignac number, because 121014205124405 - 2⁸ = 121014205124149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12101420512436 + ... + 12101420512445.

It is an arithmetic number, because the mean of its divisors is an integer number (36304261537323).

Almost surely, 2^{121014205124405} is an apocalyptic number.

It is an amenable number.

121014205124405 is a deficient number, since it is larger than the sum of its proper divisors (24202841024887).

121014205124405 is an equidigital number, since it uses as much as digits as its factorization.

121014205124405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24202841024886.

The product of its (nonzero) digits is 12800, while the sum is 32.

Adding to 121014205124405 its reverse (504421502410121), we get a palindrome (625435707534526).

The spelling of 121014205124405 in words is "one hundred twenty-one trillion, fourteen billion, two hundred five million, one hundred twenty-four thousand, four hundred five".