121303 has 16 divisors (see below), whose sum is σ = 157696. Its totient is φ = 90720.

The previous prime is 121291. The next prime is 121309. The reversal of 121303 is 303121.

It is not a de Polignac number, because 121303 - 2⁵ = 121271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2800 + ... + 2842.

It is an arithmetic number, because the mean of its divisors is an integer number (9856).

2¹²¹³⁰³ is an apocalyptic number.

121303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121303 is a deficient number, since it is larger than the sum of its proper divisors (36393).

121303 is a wasteful number, since it uses less digits than its factorization.

121303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 121303 is about 348.2858021798. The cubic root of 121303 is about 49.5021255422.

Adding to 121303 its reverse (303121), we get a palindrome (424424).

It can be divided in two parts, 121 and 303, that multiplied together give a palindrome (36663).

The spelling of 121303 in words is "one hundred twenty-one thousand, three hundred three", and thus it is an iban number.