133287212 has 6 divisors (see below), whose sum is σ = 233252628. Its totient is φ = 66643604.

The previous prime is 133287169. The next prime is 133287227. The reversal of 133287212 is 212782331.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16660898 + ... + 16660905.

It is an arithmetic number, because the mean of its divisors is an integer number (38875438).

Almost surely, 2^133287212 is an apocalyptic number.

It is an amenable number.

133287212 is a deficient number, since it is larger than the sum of its proper divisors (99965416).

133287212 is a wasteful number, since it uses less digits than its factorization.

133287212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33321807 (or 33321805 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 133287212 is about 11545.0080987412. The cubic root of 133287212 is about 510.8140427811.

The spelling of 133287212 in words is "one hundred thirty-three million, two hundred eighty-seven thousand, two hundred twelve".