1213313320033 has 4 divisors (see below), whose sum is σ = 1213315529920. Its totient is φ = 1213311110148.

The previous prime is 1213313320019. The next prime is 1213313320097. The reversal of 1213313320033 is 3300233133121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1213313320033 - 2¹⁷ = 1213313188961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213313360033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421828 + ... + 1613866.

It is an arithmetic number, because the mean of its divisors is an integer number (303328882480).

Almost surely, 2^{1213313320033} is an apocalyptic number.

It is an amenable number.

1213313320033 is a deficient number, since it is larger than the sum of its proper divisors (2209887).

1213313320033 is a wasteful number, since it uses less digits than its factorization.

1213313320033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209886.

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

Adding to 1213313320033 its reverse (3300233133121), we get a palindrome (4513546453154).

The spelling of 1213313320033 in words is "one trillion, two hundred thirteen billion, three hundred thirteen million, three hundred twenty thousand, thirty-three".