121755673353 has 4 divisors (see below), whose sum is σ = 162340897808. Its totient is φ = 81170448900.

The previous prime is 121755673331. The next prime is 121755673363. The reversal of 121755673353 is 353376557121.

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 not a de Polignac number, because 121755673353 - 2¹⁴ = 121755656969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121755673363) 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, 20292612223 + ... + 20292612228.

It is an arithmetic number, because the mean of its divisors is an integer number (40585224452).

Almost surely, 2^121755673353 is an apocalyptic number.

It is an amenable number.

121755673353 is a deficient number, since it is larger than the sum of its proper divisors (40585224455).

121755673353 is an equidigital number, since it uses as much as digits as its factorization.

121755673353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40585224454.

The product of its digits is 1984500, while the sum is 48.

The spelling of 121755673353 in words is "one hundred twenty-one billion, seven hundred fifty-five million, six hundred seventy-three thousand, three hundred fifty-three".