212130103 has 4 divisors (see below), whose sum is σ = 212451688. Its totient is φ = 211808520.

The previous prime is 212130101. The next prime is 212130109. The reversal of 212130103 is 301031212.

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 212130103 - 2¹ = 212130101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212130101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159801 + ... + 161122.

It is an arithmetic number, because the mean of its divisors is an integer number (53112922).

Almost surely, 2^212130103 is an apocalyptic number.

212130103 is a deficient number, since it is larger than the sum of its proper divisors (321585).

212130103 is an equidigital number, since it uses as much as digits as its factorization.

212130103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321584.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 212130103 is about 14564.6868486761. The cubic root of 212130103 is about 596.3951471384.

Adding to 212130103 its reverse (301031212), we get a palindrome (513161315).

The spelling of 212130103 in words is "two hundred twelve million, one hundred thirty thousand, one hundred three".