1211301103 has 2 divisors, whose sum is σ = 1211301104. Its totient is φ = 1211301102.

The previous prime is 1211301073. The next prime is 1211301121. The reversal of 1211301103 is 3011031121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211301103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211301163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605650551 + 605650552.

It is an arithmetic number, because the mean of its divisors is an integer number (605650552).

Almost surely, 2^1211301103 is an apocalyptic number.

1211301103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211301103 is an equidigital number, since it uses as much as digits as its factorization.

1211301103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1211301103 is about 34803.7512776999. The cubic root of 1211301103 is about 1065.9840443740.

Adding to 1211301103 its reverse (3011031121), we get a palindrome (4222332224).

The spelling of 1211301103 in words is "one billion, two hundred eleven million, three hundred one thousand, one hundred three".