1230121103 has 2 divisors, whose sum is σ = 1230121104. Its totient is φ = 1230121102.

The previous prime is 1230121097. The next prime is 1230121133. The reversal of 1230121103 is 3011210321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1230121103 - 2⁸ = 1230120847 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230121133) 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 as a sum of consecutive naturals, namely, 615060551 + 615060552.

It is an arithmetic number, because the mean of its divisors is an integer number (615060552).

Almost surely, 2^1230121103 is an apocalyptic number.

1230121103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230121103 is an equidigital number, since it uses as much as digits as its factorization.

1230121103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1230121103 is about 35073.0823139341. The cubic root of 1230121103 is about 1071.4764324262.

Adding to 1230121103 its reverse (3011210321), we get a palindrome (4241331424).

The spelling of 1230121103 in words is "one billion, two hundred thirty million, one hundred twenty-one thousand, one hundred three".