211214342 has 4 divisors (see below), whose sum is σ = 316821516. Its totient is φ = 105607170.

The previous prime is 211214291. The next prime is 211214357. The reversal of 211214342 is 243412112.

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

It is a super-2 number, since 2×211214342² = 89222996532985928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52803584 + ... + 52803587.

It is an arithmetic number, because the mean of its divisors is an integer number (79205379).

Almost surely, 2^211214342 is an apocalyptic number.

211214342 is a deficient number, since it is larger than the sum of its proper divisors (105607174).

211214342 is a wasteful number, since it uses less digits than its factorization.

211214342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105607173.

The product of its digits is 384, while the sum is 20.

The square root of 211214342 is about 14533.2151294887. The cubic root of 211214342 is about 595.5357009580.

Adding to 211214342 its reverse (243412112), we get a palindrome (454626454).

The spelling of 211214342 in words is "two hundred eleven million, two hundred fourteen thousand, three hundred forty-two".