133023212 has 12 divisors (see below), whose sum is σ = 266046480. Its totient is φ = 57009936.

The previous prime is 133023211. The next prime is 133023221. The reversal of 133023212 is 212320331.

133023212 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (133023211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2375387 + ... + 2375442.

It is an arithmetic number, because the mean of its divisors is an integer number (22170540).

Almost surely, 2^133023212 is an apocalyptic number.

It is an amenable number.

133023212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133023212 is a wasteful number, since it uses less digits than its factorization.

133023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4750840 (or 4750838 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 133023212 is about 11533.5689185958. The cubic root of 133023212 is about 510.4765659434.

Adding to 133023212 its reverse (212320331), we get a palindrome (345343543).

It can be divided in two parts, 1330 and 23212, that added together give a palindrome (24542).

The spelling of 133023212 in words is "one hundred thirty-three million, twenty-three thousand, two hundred twelve".