212021203 has 2 divisors, whose sum is σ = 212021204. Its totient is φ = 212021202.

The previous prime is 212021143. The next prime is 212021213. The reversal of 212021203 is 302120212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212021203 is a prime.

It is not a weakly prime, because it can be changed into another prime (212021213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010601 + 106010602.

It is an arithmetic number, because the mean of its divisors is an integer number (106010602).

Almost surely, 2^212021203 is an apocalyptic number.

212021203 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021203 is an equidigital number, since it uses as much as digits as its factorization.

212021203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 212021203 is about 14560.9478743659. The cubic root of 212021203 is about 596.2930736975.

Adding to 212021203 its reverse (302120212), we get a palindrome (514141415).

Subtracting 212021203 from its reverse (302120212), we obtain a palindrome (90099009).

The spelling of 212021203 in words is "two hundred twelve million, twenty-one thousand, two hundred three".