211201442 has 4 divisors (see below), whose sum is σ = 316802166. Its totient is φ = 105600720.

The previous prime is 211201399. The next prime is 211201447. The reversal of 211201442 is 244102112.

211201442 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., 209641441 + 1560001 = 14479^2 + 1249^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211201442.

It is not an unprimeable number, because it can be changed into a prime (211201447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52800359 + ... + 52800362.

Almost surely, 2^211201442 is an apocalyptic number.

211201442 is a deficient number, since it is larger than the sum of its proper divisors (105600724).

211201442 is a wasteful number, since it uses less digits than its factorization.

211201442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105600723.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 211201442 is about 14532.7713117629. The cubic root of 211201442 is about 595.5235765178.

Adding to 211201442 its reverse (244102112), we get a palindrome (455303554).

The spelling of 211201442 in words is "two hundred eleven million, two hundred one thousand, four hundred forty-two".