121550203 has 8 divisors (see below), whose sum is σ = 122466960. Its totient is φ = 120637440.

The previous prime is 121550179. The next prime is 121550267. The reversal of 121550203 is 302055121.

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 121550203 - 2¹³ = 121542011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121550503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85563 + ... + 86971.

It is an arithmetic number, because the mean of its divisors is an integer number (15308370).

Almost surely, 2^121550203 is an apocalyptic number.

121550203 is a deficient number, since it is larger than the sum of its proper divisors (916757).

121550203 is a wasteful number, since it uses less digits than its factorization.

121550203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 121550203 is about 11024.9808616614. The cubic root of 121550203 is about 495.3572946707.

The spelling of 121550203 in words is "one hundred twenty-one million, five hundred fifty thousand, two hundred three".