212112020213 has 4 divisors (see below), whose sum is σ = 215589266508. Its totient is φ = 208634773920.

The previous prime is 212112020209. The next prime is 212112020221. The reversal of 212112020213 is 312020211212.

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 75857278084 + 136254742129 = 275422^2 + 369127^2 .

It is a cyclic number.

It is not a de Polignac number, because 212112020213 - 2² = 212112020209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212112020191 and 212112020200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112028213) 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, 1738623056 + ... + 1738623177.

It is an arithmetic number, because the mean of its divisors is an integer number (53897316627).

Almost surely, 2^212112020213 is an apocalyptic number.

It is an amenable number.

212112020213 is a deficient number, since it is larger than the sum of its proper divisors (3477246295).

212112020213 is an equidigital number, since it uses as much as digits as its factorization.

212112020213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3477246294.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212112020213 its reverse (312020211212), we get a palindrome (524132231425).

The spelling of 212112020213 in words is "two hundred twelve billion, one hundred twelve million, twenty thousand, two hundred thirteen".