212232442 has 4 divisors (see below), whose sum is σ = 318348666. Its totient is φ = 106116220.

The previous prime is 212232439. The next prime is 212232491. The reversal of 212232442 is 244232212.

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., 124791241 + 87441201 = 11171^2 + 9351^2 .

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53058109 + ... + 53058112.

Almost surely, 2^212232442 is an apocalyptic number.

212232442 is a deficient number, since it is larger than the sum of its proper divisors (106116224).

212232442 is a wasteful number, since it uses less digits than its factorization.

212232442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106116223.

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

The square root of 212232442 is about 14568.1996828709. The cubic root of 212232442 is about 596.4910390300.

Adding to 212232442 its reverse (244232212), we get a palindrome (456464654).

The spelling of 212232442 in words is "two hundred twelve million, two hundred thirty-two thousand, four hundred forty-two".