213120133 has 4 divisors (see below), whose sum is σ = 219995008. Its totient is φ = 206245260.

The previous prime is 213120119. The next prime is 213120151. The reversal of 213120133 is 331021312.

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-213120133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213120163) 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, 3437391 + ... + 3437452.

It is an arithmetic number, because the mean of its divisors is an integer number (54998752).

Almost surely, 2^213120133 is an apocalyptic number.

It is an amenable number.

213120133 is a deficient number, since it is larger than the sum of its proper divisors (6874875).

213120133 is an equidigital number, since it uses as much as digits as its factorization.

213120133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6874874.

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

The square root of 213120133 is about 14598.6346279370. The cubic root of 213120133 is about 597.3215171570.

Adding to 213120133 its reverse (331021312), we get a palindrome (544141445).

The spelling of 213120133 in words is "two hundred thirteen million, one hundred twenty thousand, one hundred thirty-three".