121402203 has 16 divisors (see below), whose sum is σ = 174782496. Its totient is φ = 74511360.

The previous prime is 121402199. The next prime is 121402213. The reversal of 121402203 is 302204121.

It is not a de Polignac number, because 121402203 - 2² = 121402199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121402213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11563 + ... + 19403.

It is an arithmetic number, because the mean of its divisors is an integer number (10923906).

Almost surely, 2^121402203 is an apocalyptic number.

121402203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121402203 is a deficient number, since it is larger than the sum of its proper divisors (53380293).

121402203 is a wasteful number, since it uses less digits than its factorization.

121402203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8254.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 121402203 is about 11018.2667874762. The cubic root of 121402203 is about 495.1561633595.

Adding to 121402203 its reverse (302204121), we get a palindrome (423606324).

The spelling of 121402203 in words is "one hundred twenty-one million, four hundred two thousand, two hundred three".