212103212213 has 8 divisors (see below), whose sum is σ = 218098532280. Its totient is φ = 206121723840.

The previous prime is 212103212149. The next prime is 212103212219. The reversal of 212103212213 is 312212301212.

It can be written as a sum of positive squares in 4 ways, for example, as 115604760049 + 96498452164 = 340007^2 + 310642^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212103212213 - 2⁶ = 212103212149 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 (212103212219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3426818 + ... + 3488163.

It is an arithmetic number, because the mean of its divisors is an integer number (27262316535).

Almost surely, 2^212103212213 is an apocalyptic number.

It is an amenable number.

212103212213 is a deficient number, since it is larger than the sum of its proper divisors (5995320067).

212103212213 is an equidigital number, since it uses as much as digits as its factorization.

212103212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6915847.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 212103212213 its reverse (312212301212), we get a palindrome (524315513425).

The spelling of 212103212213 in words is "two hundred twelve billion, one hundred three million, two hundred twelve thousand, two hundred thirteen".