212222430313 has 4 divisors (see below), whose sum is σ = 212891902020. Its totient is φ = 211552958608.

The previous prime is 212222430311. The next prime is 212222430349. The reversal of 212222430313 is 313034222212.

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 17307244249 + 194915186064 = 131557^2 + 441492^2 .

It is a cyclic number.

It is not a de Polignac number, because 212222430313 - 2¹ = 212222430311 is a prime.

It is a super-2 number, since 2×212222430313² (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 (212222430311) 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, 334735378 + ... + 334736011.

It is an arithmetic number, because the mean of its divisors is an integer number (53222975505).

Almost surely, 2^212222430313 is an apocalyptic number.

It is an amenable number.

212222430313 is a deficient number, since it is larger than the sum of its proper divisors (669471707).

212222430313 is an equidigital number, since it uses as much as digits as its factorization.

212222430313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669471706.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 212222430313 its reverse (313034222212), we get a palindrome (525256652525).

The spelling of 212222430313 in words is "two hundred twelve billion, two hundred twenty-two million, four hundred thirty thousand, three hundred thirteen".