133213012 has 6 divisors (see below), whose sum is σ = 233122778. Its totient is φ = 66606504.

The previous prime is 133212949. The next prime is 133213043. The reversal of 133213012 is 210312331.

It can be written as a sum of positive squares in only one way, i.e., 75968656 + 57244356 = 8716^2 + 7566^2 .

It is a super-2 number, since 2×133213012² = 35491413132224288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16651623 + ... + 16651630.

Almost surely, 2^133213012 is an apocalyptic number.

It is an amenable number.

133213012 is a deficient number, since it is larger than the sum of its proper divisors (99909766).

133213012 is a wasteful number, since it uses less digits than its factorization.

133213012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33303257 (or 33303255 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 133213012 is about 11541.7941412936. The cubic root of 133213012 is about 510.7192363930.

Adding to 133213012 its reverse (210312331), we get a palindrome (343525343).

The spelling of 133213012 in words is "one hundred thirty-three million, two hundred thirteen thousand, twelve".