121309603 has 8 divisors (see below), whose sum is σ = 132589440. Its totient is φ = 110490240.

The previous prime is 121309583. The next prime is 121309607. The reversal of 121309603 is 306903121.

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

It is a cyclic number.

It is not a de Polignac number, because 121309603 - 2¹⁷ = 121178531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121309607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114568 + ... + 115621.

It is an arithmetic number, because the mean of its divisors is an integer number (16573680).

Almost surely, 2^121309603 is an apocalyptic number.

121309603 is a deficient number, since it is larger than the sum of its proper divisors (11279837).

121309603 is a wasteful number, since it uses less digits than its factorization.

121309603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230237.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 121309603 is about 11014.0638730670. The cubic root of 121309603 is about 495.0302372442.

The spelling of 121309603 in words is "one hundred twenty-one million, three hundred nine thousand, six hundred three".