212710772361 has 4 divisors (see below), whose sum is σ = 283614363152. Its totient is φ = 141807181572.

The previous prime is 212710772359. The next prime is 212710772363. The reversal of 212710772361 is 163277017212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (212710772359) and next prime (212710772363).

It is not a de Polignac number, because 212710772361 - 2¹ = 212710772359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212710772363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35451795391 + ... + 35451795396.

It is an arithmetic number, because the mean of its divisors is an integer number (70903590788).

Almost surely, 2^212710772361 is an apocalyptic number.

It is an amenable number.

212710772361 is a deficient number, since it is larger than the sum of its proper divisors (70903590791).

212710772361 is an equidigital number, since it uses as much as digits as its factorization.

212710772361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70903590790.

The product of its (nonzero) digits is 49392, while the sum is 39.

Adding to 212710772361 its reverse (163277017212), we get a palindrome (375987789573).

The spelling of 212710772361 in words is "two hundred twelve billion, seven hundred ten million, seven hundred seventy-two thousand, three hundred sixty-one".