212322121010 has 16 divisors (see below), whose sum is σ = 404660983896. Its totient is φ = 79933033728.

The previous prime is 212322121007. The next prime is 212322121019. The reversal of 212322121010 is 10121223212.

It can be written as a sum of positive squares in 4 ways, for example, as 141694274929 + 70627846081 = 376423^2 + 265759^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 212322121010.

It is not an unprimeable number, because it can be changed into a prime (212322121019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624476657 + ... + 624476996.

Almost surely, 2^212322121010 is an apocalyptic number.

212322121010 is a deficient number, since it is larger than the sum of its proper divisors (192338862886).

212322121010 is a wasteful number, since it uses less digits than its factorization.

212322121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248953677.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212322121010 its reverse (10121223212), we get a palindrome (222443344222).

The spelling of 212322121010 in words is "two hundred twelve billion, three hundred twenty-two million, one hundred twenty-one thousand, ten".