212120603 has 4 divisors (see below), whose sum is σ = 212181360. Its totient is φ = 212059848.

The previous prime is 212120581. The next prime is 212120627. The reversal of 212120603 is 306021212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212120603 - 2¹⁸ = 211858459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212120653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24800 + ... + 32237.

It is an arithmetic number, because the mean of its divisors is an integer number (53045340).

Almost surely, 2^212120603 is an apocalyptic number.

212120603 is a deficient number, since it is larger than the sum of its proper divisors (60757).

212120603 is an equidigital number, since it uses as much as digits as its factorization.

212120603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60756.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 212120603 is about 14564.3607137423. The cubic root of 212120603 is about 596.3862440511.

Adding to 212120603 its reverse (306021212), we get a palindrome (518141815).

The spelling of 212120603 in words is "two hundred twelve million, one hundred twenty thousand, six hundred three".