133321206917 has 2 divisors, whose sum is σ = 133321206918. Its totient is φ = 133321206916.

The previous prime is 133321206877. The next prime is 133321206943. The reversal of 133321206917 is 719602123331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110153627236 + 23167579681 = 331894^2 + 152209^2 .

It is a cyclic number.

It is not a de Polignac number, because 133321206917 - 2⁸ = 133321206661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133321206817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66660603458 + 66660603459.

It is an arithmetic number, because the mean of its divisors is an integer number (66660603459).

Almost surely, 2^133321206917 is an apocalyptic number.

It is an amenable number.

133321206917 is a deficient number, since it is larger than the sum of its proper divisors (1).

133321206917 is an equidigital number, since it uses as much as digits as its factorization.

133321206917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The spelling of 133321206917 in words is "one hundred thirty-three billion, three hundred twenty-one million, two hundred six thousand, nine hundred seventeen".