1213321001333 has 4 divisors (see below), whose sum is σ = 1386652572960. Its totient is φ = 1039989429708.

The previous prime is 1213321001329. The next prime is 1213321001363. The reversal of 1213321001333 is 3331001233121.

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.

It is a cyclic number.

It is not a de Polignac number, because 1213321001333 - 2² = 1213321001329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213321001299 and 1213321001308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213321001363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86665785803 + ... + 86665785816.

It is an arithmetic number, because the mean of its divisors is an integer number (346663143240).

Almost surely, 2^{1213321001333} is an apocalyptic number.

It is an amenable number.

1213321001333 is a deficient number, since it is larger than the sum of its proper divisors (173331571627).

1213321001333 is an equidigital number, since it uses as much as digits as its factorization.

1213321001333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173331571626.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1213321001333 its reverse (3331001233121), we get a palindrome (4544322234454).

The spelling of 1213321001333 in words is "one trillion, two hundred thirteen billion, three hundred twenty-one million, one thousand, three hundred thirty-three".