212322122 has 4 divisors (see below), whose sum is σ = 318483186. Its totient is φ = 106161060.

The previous prime is 212322113. The next prime is 212322127. The reversal of 212322122 is 221223212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 201895681 + 10426441 = 14209^2 + 3229^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212322122.

It is not an unprimeable number, because it can be changed into a prime (212322127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53080529 + ... + 53080532.

Almost surely, 2^212322122 is an apocalyptic number.

212322122 is a deficient number, since it is larger than the sum of its proper divisors (106161064).

212322122 is a wasteful number, since it uses less digits than its factorization.

212322122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106161063.

The product of its digits is 192, while the sum is 17.

The square root of 212322122 is about 14571.2772947330. The cubic root of 212322122 is about 596.5750440687.

Adding to 212322122 its reverse (221223212), we get a palindrome (433545334).

The spelling of 212322122 in words is "two hundred twelve million, three hundred twenty-two thousand, one hundred twenty-two".