212144243 has 2 divisors, whose sum is σ = 212144244. Its totient is φ = 212144242.

The previous prime is 212144239. The next prime is 212144267. The reversal of 212144243 is 342441212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212144243 - 2² = 212144239 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212144293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106072121 + 106072122.

It is an arithmetic number, because the mean of its divisors is an integer number (106072122).

Almost surely, 2^212144243 is an apocalyptic number.

212144243 is a deficient number, since it is larger than the sum of its proper divisors (1).

212144243 is an equidigital number, since it uses as much as digits as its factorization.

212144243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 23.

The square root of 212144243 is about 14565.1722612539. The cubic root of 212144243 is about 596.4083981887.

Adding to 212144243 its reverse (342441212), we get a palindrome (554585455).

It can be divided in two parts, 2121 and 44243, that added together give a palindrome (46364).

The spelling of 212144243 in words is "two hundred twelve million, one hundred forty-four thousand, two hundred forty-three".