212021032313 has 4 divisors (see below), whose sum is σ = 212336071668. Its totient is φ = 211705992960.

The previous prime is 212021032297. The next prime is 212021032337. The reversal of 212021032313 is 313230120212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19697561104 + 192323471209 = 140348^2 + 438547^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021032313 - 2⁴ = 212021032297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021035313) 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, 157518668 + ... + 157520013.

It is an arithmetic number, because the mean of its divisors is an integer number (53084017917).

Almost surely, 2^212021032313 is an apocalyptic number.

It is an amenable number.

212021032313 is a deficient number, since it is larger than the sum of its proper divisors (315039355).

212021032313 is an equidigital number, since it uses as much as digits as its factorization.

212021032313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315039354.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 212021032313 its reverse (313230120212), we get a palindrome (525251152525).

The spelling of 212021032313 in words is "two hundred twelve billion, twenty-one million, thirty-two thousand, three hundred thirteen".