212653630243 has 2 divisors, whose sum is σ = 212653630244. Its totient is φ = 212653630242.

The previous prime is 212653630219. The next prime is 212653630249. The reversal of 212653630243 is 342036356212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212653630243 is a prime.

It is not a weakly prime, because it can be changed into another prime (212653630249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106326815121 + 106326815122.

It is an arithmetic number, because the mean of its divisors is an integer number (106326815122).

Almost surely, 2^212653630243 is an apocalyptic number.

212653630243 is a deficient number, since it is larger than the sum of its proper divisors (1).

212653630243 is an equidigital number, since it uses as much as digits as its factorization.

212653630243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 37.

Adding to 212653630243 its reverse (342036356212), we get a palindrome (554689986455).

The spelling of 212653630243 in words is "two hundred twelve billion, six hundred fifty-three million, six hundred thirty thousand, two hundred forty-three".