121345051240405 has 8 divisors (see below), whose sum is σ = 145616384220984. Its totient is φ = 97074492504000.

The previous prime is 121345051240393. The next prime is 121345051240417. The reversal of 121345051240405 is 504042150543121.

It is an interprime number because it is at equal distance from previous prime (121345051240393) and next prime (121345051240417).

It can be written as a sum of positive squares in 4 ways, for example, as 6654702468241 + 114690348772164 = 2579671^2 + 10709358^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121345051240405 - 2⁷ = 121345051240277 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 7 ways as a sum of consecutive naturals, for example, 193216186 + ... + 193843195.

It is an arithmetic number, because the mean of its divisors is an integer number (18202048027623).

Almost surely, 2^{121345051240405} is an apocalyptic number.

It is an amenable number.

121345051240405 is a deficient number, since it is larger than the sum of its proper divisors (24271332980579).

121345051240405 is an equidigital number, since it uses as much as digits as its factorization.

121345051240405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387122087.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 121345051240405 in words is "one hundred twenty-one trillion, three hundred forty-five billion, fifty-one million, two hundred forty thousand, four hundred five".