133012999 has 10 divisors (see below), whose sum is σ = 155175400. Its totient is φ = 114009084.

The previous prime is 133012991. The next prime is 133013003. The reversal of 133012999 is 999210331.

It is not a de Polignac number, because 133012999 - 2³ = 133012991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133012991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 25299 + ... + 30100.

It is an arithmetic number, because the mean of its divisors is an integer number (15517540).

Almost surely, 2^133012999 is an apocalyptic number.

133012999 is a deficient number, since it is larger than the sum of its proper divisors (22162401).

133012999 is an frugal number, since it uses more digits than its factorization.

133012999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55427 (or 55406 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 133012999 is about 11533.1261590256. The cubic root of 133012999 is about 510.4635014802.

The spelling of 133012999 in words is "one hundred thirty-three million, twelve thousand, nine hundred ninety-nine".