212101042 has 4 divisors (see below), whose sum is σ = 318151566. Its totient is φ = 106050520.

The previous prime is 212101031. The next prime is 212101079. The reversal of 212101042 is 240101212.

It is a happy number.

212101042 is digitally balanced in base 2, because in such base 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., 158533281 + 53567761 = 12591^2 + 7319^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53025259 + ... + 53025262.

Almost surely, 2^212101042 is an apocalyptic number.

212101042 is a deficient number, since it is larger than the sum of its proper divisors (106050524).

212101042 is a wasteful number, since it uses less digits than its factorization.

212101042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106050523.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 212101042 is about 14563.6891617474. The cubic root of 212101042 is about 596.3679112885.

Adding to 212101042 its reverse (240101212), we get a palindrome (452202254).

The spelling of 212101042 in words is "two hundred twelve million, one hundred one thousand, forty-two".