133212073 has 2 divisors, whose sum is σ = 133212074. Its totient is φ = 133212072.

The previous prime is 133212071. The next prime is 133212089. The reversal of 133212073 is 370212331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131606784 + 1605289 = 11472^2 + 1267^2 .

It is a cyclic number.

It is not a de Polignac number, because 133212073 - 2¹ = 133212071 is a prime.

Together with 133212071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (133212071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66606036 + 66606037.

It is an arithmetic number, because the mean of its divisors is an integer number (66606037).

Almost surely, 2^133212073 is an apocalyptic number.

It is an amenable number.

133212073 is a deficient number, since it is larger than the sum of its proper divisors (1).

133212073 is an equidigital number, since it uses as much as digits as its factorization.

133212073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 133212073 is about 11541.7534629709. The cubic root of 133212073 is about 510.7180363938.

The spelling of 133212073 in words is "one hundred thirty-three million, two hundred twelve thousand, seventy-three".