121242453554215 has 8 divisors (see below), whose sum is σ = 166275364874400. Its totient is φ = 83137682437152.

The previous prime is 121242453554161. The next prime is 121242453554237. The reversal of 121242453554215 is 512455354242121.

It is a happy number.

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

It is not a de Polignac number, because 121242453554215 - 2⁷ = 121242453554087 is a prime.

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, 1732035050740 + ... + 1732035050809.

It is an arithmetic number, because the mean of its divisors is an integer number (20784420609300).

Almost surely, 2^{121242453554215} is an apocalyptic number.

121242453554215 is a deficient number, since it is larger than the sum of its proper divisors (45032911320185).

121242453554215 is an equidigital number, since it uses as much as digits as its factorization.

121242453554215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464070101561.

The product of its digits is 1920000, while the sum is 46.

The spelling of 121242453554215 in words is "one hundred twenty-one trillion, two hundred forty-two billion, four hundred fifty-three million, five hundred fifty-four thousand, two hundred fifteen".