212124403 has 2 divisors, whose sum is σ = 212124404. Its totient is φ = 212124402.

The previous prime is 212124383. The next prime is 212124421. The reversal of 212124403 is 304421212.

212124403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212124403 is a prime.

It is not a weakly prime, because it can be changed into another prime (212124433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106062201 + 106062202.

It is an arithmetic number, because the mean of its divisors is an integer number (106062202).

Almost surely, 2^212124403 is an apocalyptic number.

212124403 is a deficient number, since it is larger than the sum of its proper divisors (1).

212124403 is an equidigital number, since it uses as much as digits as its factorization.

212124403 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 212124403 is about 14564.4911685922. The cubic root of 212124403 is about 596.3898053179.

Adding to 212124403 its reverse (304421212), we get a palindrome (516545615).

The spelling of 212124403 in words is "two hundred twelve million, one hundred twenty-four thousand, four hundred three".