1212323121303 has 32 divisors (see below), whose sum is σ = 1865252759040. Its totient is φ = 686046789120.

The previous prime is 1212323121293. The next prime is 1212323121307. The reversal of 1212323121303 is 3031213232121.

It is not a de Polignac number, because 1212323121303 - 2⁶ = 1212323121239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212323121307) 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 31 ways as a sum of consecutive naturals, for example, 6580483 + ... + 6762203.

It is an arithmetic number, because the mean of its divisors is an integer number (58289148720).

Almost surely, 2^{1212323121303} is an apocalyptic number.

1212323121303 is a deficient number, since it is larger than the sum of its proper divisors (652929637737).

1212323121303 is a wasteful number, since it uses less digits than its factorization.

1212323121303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184807.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1212323121303 its reverse (3031213232121), we get a palindrome (4243536353424).

The spelling of 1212323121303 in words is "one trillion, two hundred twelve billion, three hundred twenty-three million, one hundred twenty-one thousand, three hundred three".