212331122 has 16 divisors (see below), whose sum is σ = 338644152. Its totient is φ = 99502080.

The previous prime is 212331089. The next prime is 212331151. The reversal of 212331122 is 221133212.

It can be written as a sum of positive squares in 4 ways, for example, as 211673401 + 657721 = 14549^2 + 811^2 .

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 212331122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4763 + ... + 21150.

Almost surely, 2^212331122 is an apocalyptic number.

212331122 is a deficient number, since it is larger than the sum of its proper divisors (126313030).

212331122 is a wasteful number, since it uses less digits than its factorization.

212331122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26173.

The product of its digits is 144, while the sum is 17.

The square root of 212331122 is about 14571.5861181959. The cubic root of 212331122 is about 596.5834732415.

Adding to 212331122 its reverse (221133212), we get a palindrome (433464334).

The spelling of 212331122 in words is "two hundred twelve million, three hundred thirty-one thousand, one hundred twenty-two".