212442322 has 4 divisors (see below), whose sum is σ = 318663486. Its totient is φ = 106221160.

The previous prime is 212442311. The next prime is 212442323. The reversal of 212442322 is 223244212.

212442322 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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., 210801361 + 1640961 = 14519^2 + 1281^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 212442293 and 212442302.

It is not an unprimeable number, because it can be changed into a prime (212442323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53110579 + ... + 53110582.

Almost surely, 2^212442322 is an apocalyptic number.

212442322 is a deficient number, since it is larger than the sum of its proper divisors (106221164).

212442322 is a wasteful number, since it uses less digits than its factorization.

212442322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106221163.

The product of its digits is 1536, while the sum is 22.

The square root of 212442322 is about 14575.4012637732. The cubic root of 212442322 is about 596.6876007067.

Adding to 212442322 its reverse (223244212), we get a palindrome (435686534).

The spelling of 212442322 in words is "two hundred twelve million, four hundred forty-two thousand, three hundred twenty-two".