212213846393 has 4 divisors (see below), whose sum is σ = 217389793908. Its totient is φ = 207037898880.

The previous prime is 212213846381. The next prime is 212213846417. The reversal of 212213846393 is 393648312212.

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 22877470009 + 189336376384 = 151253^2 + 435128^2 .

It is a cyclic number.

It is not a de Polignac number, because 212213846393 - 2⁶ = 212213846329 is a prime.

It is a super-2 number, since 2×212213846393² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212213846893) 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, 2587973696 + ... + 2587973777.

It is an arithmetic number, because the mean of its divisors is an integer number (54347448477).

Almost surely, 2^212213846393 is an apocalyptic number.

It is an amenable number.

212213846393 is a deficient number, since it is larger than the sum of its proper divisors (5175947515).

212213846393 is an equidigital number, since it uses as much as digits as its factorization.

212213846393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5175947514.

The product of its digits is 373248, while the sum is 44.

The spelling of 212213846393 in words is "two hundred twelve billion, two hundred thirteen million, eight hundred forty-six thousand, three hundred ninety-three".