121663803 has 8 divisors (see below), whose sum is σ = 162661888. Its totient is φ = 80887464.

The previous prime is 121663757. The next prime is 121663811. The reversal of 121663803 is 308366121.

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

It is not a de Polignac number, because 121663803 - 2⁶ = 121663739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121663103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54151 + ... + 56352.

It is an arithmetic number, because the mean of its divisors is an integer number (20332736).

Almost surely, 2^121663803 is an apocalyptic number.

121663803 is a deficient number, since it is larger than the sum of its proper divisors (40998085).

121663803 is a wasteful number, since it uses less digits than its factorization.

121663803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110873.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 121663803 is about 11030.1315948632. The cubic root of 121663803 is about 495.5115658161.

The spelling of 121663803 in words is "one hundred twenty-one million, six hundred sixty-three thousand, eight hundred three".