12121321303 has 32 divisors (see below), whose sum is σ = 15318011520. Its totient is φ = 9334794240.

The previous prime is 12121321279. The next prime is 12121321309. The reversal of 12121321303 is 30312312121.

It is a cyclic number.

It is not a de Polignac number, because 12121321303 - 2¹⁷ = 12121190231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121321309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1701513 + ... + 1708621.

It is an arithmetic number, because the mean of its divisors is an integer number (478687860).

Almost surely, 2^12121321303 is an apocalyptic number.

12121321303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12121321303 is a deficient number, since it is larger than the sum of its proper divisors (3196690217).

12121321303 is a wasteful number, since it uses less digits than its factorization.

12121321303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7627.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12121321303 its reverse (30312312121), we get a palindrome (42433633424).

The spelling of 12121321303 in words is "twelve billion, one hundred twenty-one million, three hundred twenty-one thousand, three hundred three".