133022213 has 4 divisors (see below), whose sum is σ = 134069760. Its totient is φ = 131974668.

The previous prime is 133022203. The next prime is 133022237. The reversal of 133022213 is 312220331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133022213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133022191 and 133022200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133022203) 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, 523583 + ... + 523836.

It is an arithmetic number, because the mean of its divisors is an integer number (33517440).

Almost surely, 2^133022213 is an apocalyptic number.

It is an amenable number.

133022213 is a deficient number, since it is larger than the sum of its proper divisors (1047547).

133022213 is a wasteful number, since it uses less digits than its factorization.

133022213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047546.

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

The square root of 133022213 is about 11533.5256101506. The cubic root of 133022213 is about 510.4752880528.

Adding to 133022213 its reverse (312220331), we get a palindrome (445242544).

The spelling of 133022213 in words is "one hundred thirty-three million, twenty-two thousand, two hundred thirteen".