133212949 has 2 divisors, whose sum is σ = 133212950. Its totient is φ = 133212948.

The previous prime is 133212943. The next prime is 133213043. The reversal of 133212949 is 949212331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107019025 + 26193924 = 10345^2 + 5118^2 .

It is a cyclic number.

It is not a de Polignac number, because 133212949 - 2¹¹ = 133210901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133212943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66606474 + 66606475.

It is an arithmetic number, because the mean of its divisors is an integer number (66606475).

Almost surely, 2^133212949 is an apocalyptic number.

It is an amenable number.

133212949 is a deficient number, since it is larger than the sum of its proper divisors (1).

133212949 is an equidigital number, since it uses as much as digits as its factorization.

133212949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 133212949 is about 11541.7914120816. The cubic root of 133212949 is about 510.7191558820.

The spelling of 133212949 in words is "one hundred thirty-three million, two hundred twelve thousand, nine hundred forty-nine".