33112313321 has 2 divisors, whose sum is σ = 33112313322. Its totient is φ = 33112313320.

The previous prime is 33112313287. The next prime is 33112313341. The reversal of 33112313321 is 12331321133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28383825625 + 4728487696 = 168475^2 + 68764^2 .

It is an emirp because it is prime and its reverse (12331321133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33112313321 - 2⁶ = 33112313257 is a prime.

It is not a weakly prime, because it can be changed into another prime (33112313341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16556156660 + 16556156661.

It is an arithmetic number, because the mean of its divisors is an integer number (16556156661).

Almost surely, 2^33112313321 is an apocalyptic number.

It is an amenable number.

33112313321 is a deficient number, since it is larger than the sum of its proper divisors (1).

33112313321 is an equidigital number, since it uses as much as digits as its factorization.

33112313321 is an evil number, because the sum of its binary digits is even.

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

Adding to 33112313321 its reverse (12331321133), we get a palindrome (45443634454).

The spelling of 33112313321 in words is "thirty-three billion, one hundred twelve million, three hundred thirteen thousand, three hundred twenty-one".