1210212103 has 4 divisors (see below), whose sum is σ = 1211196448. Its totient is φ = 1209227760.

The previous prime is 1210212077. The next prime is 1210212109. The reversal of 1210212103 is 3012120121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210212103 is a prime.

It is a super-2 number, since 2×1210212103² = 2929226668495365218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210212109) 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, 490326 + ... + 492787.

It is an arithmetic number, because the mean of its divisors is an integer number (302799112).

Almost surely, 2^1210212103 is an apocalyptic number.

1210212103 is a deficient number, since it is larger than the sum of its proper divisors (984345).

1210212103 is an equidigital number, since it uses as much as digits as its factorization.

1210212103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984344.

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

The square root of 1210212103 is about 34788.1028945242. The cubic root of 1210212103 is about 1065.6644968840.

Adding to 1210212103 its reverse (3012120121), we get a palindrome (4222332224).

The spelling of 1210212103 in words is "one billion, two hundred ten million, two hundred twelve thousand, one hundred three".