33212233513 has 2 divisors, whose sum is σ = 33212233514. Its totient is φ = 33212233512.

The previous prime is 33212233493. The next prime is 33212233531. The reversal of 33212233513 is 31533221233.

Together with next prime (33212233531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22760851689 + 10451381824 = 150867^2 + 102232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33212233513 is a prime.

It is a super-2 number, since 2×33212233513² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33212233913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16606116756 + 16606116757.

It is an arithmetic number, because the mean of its divisors is an integer number (16606116757).

Almost surely, 2^33212233513 is an apocalyptic number.

It is an amenable number.

33212233513 is a deficient number, since it is larger than the sum of its proper divisors (1).

33212233513 is an equidigital number, since it uses as much as digits as its factorization.

33212233513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 28.

Adding to 33212233513 its reverse (31533221233), we get a palindrome (64745454746).

The spelling of 33212233513 in words is "thirty-three billion, two hundred twelve million, two hundred thirty-three thousand, five hundred thirteen".