33223213997 has 2 divisors, whose sum is σ = 33223213998. Its totient is φ = 33223213996.

The previous prime is 33223213993. The next prime is 33223214023. The reversal of 33223213997 is 79931232233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25109888521 + 8113325476 = 158461^2 + 90074^2 .

It is a cyclic number.

It is not a de Polignac number, because 33223213997 - 2² = 33223213993 is a prime.

It is a super-3 number, since 3×33223213997³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33223213993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16611606998 + 16611606999.

It is an arithmetic number, because the mean of its divisors is an integer number (16611606999).

Almost surely, 2^33223213997 is an apocalyptic number.

It is an amenable number.

33223213997 is a deficient number, since it is larger than the sum of its proper divisors (1).

33223213997 is an equidigital number, since it uses as much as digits as its factorization.

33223213997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 44.

The spelling of 33223213997 in words is "thirty-three billion, two hundred twenty-three million, two hundred thirteen thousand, nine hundred ninety-seven".