212301133 has 4 divisors (see below), whose sum is σ = 231601248. Its totient is φ = 193001020.

The previous prime is 212301073. The next prime is 212301139. The reversal of 212301133 is 331103212.

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-212301133 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 (212301139) 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, 9650041 + ... + 9650062.

It is an arithmetic number, because the mean of its divisors is an integer number (57900312).

Almost surely, 2^212301133 is an apocalyptic number.

It is an amenable number.

212301133 is a deficient number, since it is larger than the sum of its proper divisors (19300115).

212301133 is a wasteful number, since it uses less digits than its factorization.

212301133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19300114.

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

The square root of 212301133 is about 14570.5570586714. The cubic root of 212301133 is about 596.5553853757. Note that the first 3 decimals are identical.

Adding to 212301133 its reverse (331103212), we get a palindrome (543404345).

The spelling of 212301133 in words is "two hundred twelve million, three hundred one thousand, one hundred thirty-three".