1266632101 has 8 divisors (see below), whose sum is σ = 1497496320. Its totient is φ = 1048247088.

The previous prime is 1266632089. The next prime is 1266632113. The reversal of 1266632101 is 1012366621.

It is an interprime number because it is at equal distance from previous prime (1266632089) and next prime (1266632113).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1266632101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1266632101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266632161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3119581 + ... + 3119986.

It is an arithmetic number, because the mean of its divisors is an integer number (187187040).

Almost surely, 2^1266632101 is an apocalyptic number.

It is an amenable number.

1266632101 is a deficient number, since it is larger than the sum of its proper divisors (230864219).

1266632101 is an equidigital number, since it uses as much as digits as its factorization.

1266632101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6239603.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1266632101 is about 35589.7752310969. The cubic root of 1266632101 is about 1081.9740134618.

Adding to 1266632101 its reverse (1012366621), we get a palindrome (2278998722).

The spelling of 1266632101 in words is "one billion, two hundred sixty-six million, six hundred thirty-two thousand, one hundred one".