212012212213 has 4 divisors (see below), whose sum is σ = 212515804588. Its totient is φ = 211508619840.

The previous prime is 212012212211. The next prime is 212012212229. The reversal of 212012212213 is 312212210212.

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 10597055364 + 201415156849 = 102942^2 + 448793^2 .

It is a cyclic number.

It is not a de Polignac number, because 212012212213 - 2¹ = 212012212211 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 (212012212211) 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, 251795556 + ... + 251796397.

It is an arithmetic number, because the mean of its divisors is an integer number (53128951147).

Almost surely, 2^212012212213 is an apocalyptic number.

It is an amenable number.

212012212213 is a deficient number, since it is larger than the sum of its proper divisors (503592375).

212012212213 is an equidigital number, since it uses as much as digits as its factorization.

212012212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503592374.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 212012212213 its reverse (312212210212), we get a palindrome (524224422425).

The spelling of 212012212213 in words is "two hundred twelve billion, twelve million, two hundred twelve thousand, two hundred thirteen".