1212210112103 has 2 divisors, whose sum is σ = 1212210112104. Its totient is φ = 1212210112102.

The previous prime is 1212210112079. The next prime is 1212210112153. The reversal of 1212210112103 is 3012110122121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212210112103 - 2¹² = 1212210108007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212210112153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606105056051 + 606105056052.

It is an arithmetic number, because the mean of its divisors is an integer number (606105056052).

Almost surely, 2^{1212210112103} is an apocalyptic number.

1212210112103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212210112103 is an equidigital number, since it uses as much as digits as its factorization.

1212210112103 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 17.

Adding to 1212210112103 its reverse (3012110122121), we get a palindrome (4224320234224).

The spelling of 1212210112103 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred twelve thousand, one hundred three".