133212233 has 24 divisors (see below), whose sum is σ = 170792064. Its totient is φ = 102732000.

The previous prime is 133212229. The next prime is 133212271. The reversal of 133212233 is 332212331.

It is not a de Polignac number, because 133212233 - 2² = 133212229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133212203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53216 + ... + 55662.

It is an arithmetic number, because the mean of its divisors is an integer number (7116336).

Almost surely, 2^133212233 is an apocalyptic number.

It is an amenable number.

133212233 is a deficient number, since it is larger than the sum of its proper divisors (37579831).

133212233 is a wasteful number, since it uses less digits than its factorization.

133212233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573 (or 2566 counting only the distinct ones).

The product of its digits is 648, while the sum is 20.

The square root of 133212233 is about 11541.7603943246. The cubic root of 133212233 is about 510.7182408669.

Adding to 133212233 its reverse (332212331), we get a palindrome (465424564).

The spelling of 133212233 in words is "one hundred thirty-three million, two hundred twelve thousand, two hundred thirty-three".