211243342144 has 14 divisors (see below), whose sum is σ = 419186007194. Its totient is φ = 105621671040.

The previous prime is 211243342127. The next prime is 211243342147. The reversal of 211243342144 is 441243342112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 196816449600 + 14426892544 = 443640^2 + 120112^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211243342147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1650338547 + ... + 1650338674.

Almost surely, 2^211243342144 is an apocalyptic number.

It is an amenable number.

211243342144 is a deficient number, since it is larger than the sum of its proper divisors (207942665050).

211243342144 is an equidigital number, since it uses as much as digits as its factorization.

211243342144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300677233 (or 3300677223 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

Adding to 211243342144 its reverse (441243342112), we get a palindrome (652486684256).

The spelling of 211243342144 in words is "two hundred eleven billion, two hundred forty-three million, three hundred forty-two thousand, one hundred forty-four".