133720099 has 2 divisors, whose sum is σ = 133720100. Its totient is φ = 133720098.

The previous prime is 133720057. The next prime is 133720133. The reversal of 133720099 is 990027331.

It is an a-pointer prime, because the next prime (133720133) can be obtained adding 133720099 to its sum of digits (34).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133720099 is a prime.

It is not a weakly prime, because it can be changed into another prime (133720009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66860049 + 66860050.

It is an arithmetic number, because the mean of its divisors is an integer number (66860050).

Almost surely, 2^133720099 is an apocalyptic number.

133720099 is a deficient number, since it is larger than the sum of its proper divisors (1).

133720099 is an equidigital number, since it uses as much as digits as its factorization.

133720099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 133720099 is about 11563.7407010016. The cubic root of 133720099 is about 511.3664483679.

The spelling of 133720099 in words is "one hundred thirty-three million, seven hundred twenty thousand, ninety-nine".