133210901 has 2 divisors, whose sum is σ = 133210902. Its totient is φ = 133210900.

The previous prime is 133210877. The next prime is 133210907. The reversal of 133210901 is 109012331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115562500 + 17648401 = 10750^2 + 4201^2 .

It is an emirp because it is prime and its reverse (109012331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133210901 - 2⁶ = 133210837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133210907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66605450 + 66605451.

It is an arithmetic number, because the mean of its divisors is an integer number (66605451).

Almost surely, 2^133210901 is an apocalyptic number.

It is an amenable number.

133210901 is a deficient number, since it is larger than the sum of its proper divisors (1).

133210901 is an equidigital number, since it uses as much as digits as its factorization.

133210901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 133210901 is about 11541.7026906778. The cubic root of 133210901 is about 510.7165386235.

The spelling of 133210901 in words is "one hundred thirty-three million, two hundred ten thousand, nine hundred one".