212610321361 has 4 divisors (see below), whose sum is σ = 212648422324. Its totient is φ = 212572220400.

The previous prime is 212610321359. The next prime is 212610321377. The reversal of 212610321361 is 163123016212.

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 112402620225 + 100207701136 = 335265^2 + 316556^2 .

It is a cyclic number.

It is not a de Polignac number, because 212610321361 - 2¹ = 212610321359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212610301361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19042110 + ... + 19053271.

It is an arithmetic number, because the mean of its divisors is an integer number (53162105581).

Almost surely, 2^212610321361 is an apocalyptic number.

It is an amenable number.

212610321361 is a deficient number, since it is larger than the sum of its proper divisors (38100963).

212610321361 is an equidigital number, since it uses as much as digits as its factorization.

212610321361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38100962.

The product of its (nonzero) digits is 2592, while the sum is 28.

Adding to 212610321361 its reverse (163123016212), we get a palindrome (375733337573).

The spelling of 212610321361 in words is "two hundred twelve billion, six hundred ten million, three hundred twenty-one thousand, three hundred sixty-one".