1266061103 has 2 divisors, whose sum is σ = 1266061104. Its totient is φ = 1266061102.

The previous prime is 1266061073. The next prime is 1266061109. The reversal of 1266061103 is 3011606621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1266061103 - 2¹² = 1266057007 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 (1266061109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633030551 + 633030552.

It is an arithmetic number, because the mean of its divisors is an integer number (633030552).

Almost surely, 2^1266061103 is an apocalyptic number.

1266061103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266061103 is an equidigital number, since it uses as much as digits as its factorization.

1266061103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1266061103 is about 35581.7523879867. The cubic root of 1266061103 is about 1081.8114043253.

Adding to 1266061103 its reverse (3011606621), we get a palindrome (4277667724).

The spelling of 1266061103 in words is "one billion, two hundred sixty-six million, sixty-one thousand, one hundred three".