210012120103 has 4 divisors (see below), whose sum is σ = 210013075440. Its totient is φ = 210011164768.

The previous prime is 210012120037. The next prime is 210012120121. The reversal of 210012120103 is 301021210012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 210012120103 - 2⁹ = 210012119591 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 (210012120203) 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, 36726 + ... + 649132.

It is an arithmetic number, because the mean of its divisors is an integer number (52503268860).

Almost surely, 2^210012120103 is an apocalyptic number.

210012120103 is a deficient number, since it is larger than the sum of its proper divisors (955337).

210012120103 is an equidigital number, since it uses as much as digits as its factorization.

210012120103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955336.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 210012120103 its reverse (301021210012), we get a palindrome (511033330115).

The spelling of 210012120103 in words is "two hundred ten billion, twelve million, one hundred twenty thousand, one hundred three".