1266101 has 2 divisors, whose sum is σ = 1266102. Its totient is φ = 1266100.

The previous prime is 1266091. The next prime is 1266107. The reversal of 1266101 is 1016621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 874225 + 391876 = 935^2 + 626^2 .

It is an emirp because it is prime and its reverse (1016621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1266101 - 2¹⁸ = 1003957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1266101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633050 + 633051.

It is an arithmetic number, because the mean of its divisors is an integer number (633051).

2^1266101 is an apocalyptic number.

It is an amenable number.

1266101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266101 is an equidigital number, since it uses as much as digits as its factorization.

1266101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1266101 is about 1125.2115356678. The cubic root of 1266101 is about 108.1822767804.

The spelling of 1266101 in words is "one million, two hundred sixty-six thousand, one hundred one".