121241664403 has 4 divisors (see below), whose sum is σ = 121762015128. Its totient is φ = 120721313680.

The previous prime is 121241664377. The next prime is 121241664431. The reversal of 121241664403 is 304466142121.

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

It is a cyclic number.

It is not a de Polignac number, because 121241664403 - 2²⁹ = 120704793491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121241664433) 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, 260175013 + ... + 260175478.

It is an arithmetic number, because the mean of its divisors is an integer number (30440503782).

Almost surely, 2^121241664403 is an apocalyptic number.

121241664403 is a deficient number, since it is larger than the sum of its proper divisors (520350725).

121241664403 is an equidigital number, since it uses as much as digits as its factorization.

121241664403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520350724.

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 121241664403 in words is "one hundred twenty-one billion, two hundred forty-one million, six hundred sixty-four thousand, four hundred three".