211022342 has 4 divisors (see below), whose sum is σ = 316533516. Its totient is φ = 105511170.

The previous prime is 211022327. The next prime is 211022347. The reversal of 211022342 is 243220112.

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

It is a self number, because there is not a number n which added to its sum of digits gives 211022342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211022347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52755584 + ... + 52755587.

It is an arithmetic number, because the mean of its divisors is an integer number (79133379).

Almost surely, 2^211022342 is an apocalyptic number.

211022342 is a deficient number, since it is larger than the sum of its proper divisors (105511174).

211022342 is a wasteful number, since it uses less digits than its factorization.

211022342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105511173.

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

The square root of 211022342 is about 14526.6080693326. The cubic root of 211022342 is about 595.3551931415.

Adding to 211022342 its reverse (243220112), we get a palindrome (454242454).

The spelling of 211022342 in words is "two hundred eleven million, twenty-two thousand, three hundred forty-two".