212021013133 has 4 divisors (see below), whose sum is σ = 212021946400. Its totient is φ = 212020079868.

The previous prime is 212021013119. The next prime is 212021013179. The reversal of 212021013133 is 331310120212.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 212021013133 - 2⁵ = 212021013101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212021013133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021013103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119818 + ... + 662116.

It is an arithmetic number, because the mean of its divisors is an integer number (53005486600).

Almost surely, 2^212021013133 is an apocalyptic number.

It is an amenable number.

212021013133 is a deficient number, since it is larger than the sum of its proper divisors (933267).

212021013133 is an equidigital number, since it uses as much as digits as its factorization.

212021013133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933266.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 212021013133 its reverse (331310120212), we get a palindrome (543331133345).

The spelling of 212021013133 in words is "two hundred twelve billion, twenty-one million, thirteen thousand, one hundred thirty-three".