211143213242 has 16 divisors (see below), whose sum is σ = 341085935232. Its totient is φ = 97448303280.

The previous prime is 211143213233. The next prime is 211143213251. The reversal of 211143213242 is 242312341112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (211143213233) and next prime (211143213251).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1385867 + ... + 1530657.

It is an arithmetic number, because the mean of its divisors is an integer number (21317870952).

Almost surely, 2^211143213242 is an apocalyptic number.

211143213242 is a deficient number, since it is larger than the sum of its proper divisors (129942721990).

211143213242 is a wasteful number, since it uses less digits than its factorization.

211143213242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200893.

The product of its digits is 2304, while the sum is 26.

Adding to 211143213242 its reverse (242312341112), we get a palindrome (453455554354).

The spelling of 211143213242 in words is "two hundred eleven billion, one hundred forty-three million, two hundred thirteen thousand, two hundred forty-two".