212124043 has 2 divisors, whose sum is σ = 212124044. Its totient is φ = 212124042.

The previous prime is 212123993. The next prime is 212124047. The reversal of 212124043 is 340421212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212124043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212124043.

It is not a weakly prime, because it can be changed into another prime (212124047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106062021 + 106062022.

It is an arithmetic number, because the mean of its divisors is an integer number (106062022).

Almost surely, 2^212124043 is an apocalyptic number.

212124043 is a deficient number, since it is larger than the sum of its proper divisors (1).

212124043 is an equidigital number, since it uses as much as digits as its factorization.

212124043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 212124043 is about 14564.4788097618. The cubic root of 212124043 is about 596.3894679366.

Adding to 212124043 its reverse (340421212), we get a palindrome (552545255).

The spelling of 212124043 in words is "two hundred twelve million, one hundred twenty-four thousand, forty-three".