212102220313 has 4 divisors (see below), whose sum is σ = 212103201460. Its totient is φ = 212101239168.

The previous prime is 212102220311. The next prime is 212102220361. The reversal of 212102220313 is 313022201212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 208924868889 + 3177351424 = 457083^2 + 56368^2 .

It is a cyclic number.

It is not a de Polignac number, because 212102220313 - 2¹ = 212102220311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212102220311) 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, 8208 + ... + 651361.

It is an arithmetic number, because the mean of its divisors is an integer number (53025800365).

Almost surely, 2^212102220313 is an apocalyptic number.

It is an amenable number.

212102220313 is a deficient number, since it is larger than the sum of its proper divisors (981147).

212102220313 is an equidigital number, since it uses as much as digits as its factorization.

212102220313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981146.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212102220313 its reverse (313022201212), we get a palindrome (525124421525).

The spelling of 212102220313 in words is "two hundred twelve billion, one hundred two million, two hundred twenty thousand, three hundred thirteen".