133311212 has 24 divisors (see below), whose sum is σ = 248611104. Its totient is φ = 62330112.

The previous prime is 133311203. The next prime is 133311287. The reversal of 133311212 is 212113331.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4433 + ... + 16919.

It is an arithmetic number, because the mean of its divisors is an integer number (10358796).

Almost surely, 2^133311212 is an apocalyptic number.

It is an amenable number.

133311212 is a deficient number, since it is larger than the sum of its proper divisors (115299892).

133311212 is a wasteful number, since it uses less digits than its factorization.

133311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12665 (or 12663 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 133311212 is about 11546.0474622271. The cubic root of 133311212 is about 510.8447003891.

Adding to 133311212 its reverse (212113331), we get a palindrome (345424543).

The spelling of 133311212 in words is "one hundred thirty-three million, three hundred eleven thousand, two hundred twelve".