1213123333003 has 16 divisors (see below), whose sum is σ = 1301004288000. Its totient is φ = 1127083830912.

The previous prime is 1213123332991. The next prime is 1213123333013. The reversal of 1213123333003 is 3003333213121.

It is a cyclic number.

It is not a de Polignac number, because 1213123333003 - 2¹⁷ = 1213123201931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213123333013) 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, 6786588 + ... + 6963046.

It is an arithmetic number, because the mean of its divisors is an integer number (81312768000).

Almost surely, 2^{1213123333003} is an apocalyptic number.

1213123333003 is a deficient number, since it is larger than the sum of its proper divisors (87880954997).

1213123333003 is a wasteful number, since it uses less digits than its factorization.

1213123333003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181674.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 1213123333003 its reverse (3003333213121), we get a palindrome (4216456546124).

The spelling of 1213123333003 in words is "one trillion, two hundred thirteen billion, one hundred twenty-three million, three hundred thirty-three thousand, three".