1266141011 has 8 divisors (see below), whose sum is σ = 1340930880. Its totient is φ = 1191385728.

The previous prime is 1266141001. The next prime is 1266141043. The reversal of 1266141011 is 1101416621.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1266141011 is a prime.

It is a super-2 number, since 2×1266141011² = 3206226119472204242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266141001) 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 in 7 ways as a sum of consecutive naturals, for example, 136070 + ... + 145076.

It is an arithmetic number, because the mean of its divisors is an integer number (167616360).

Almost surely, 2^1266141011 is an apocalyptic number.

1266141011 is a deficient number, since it is larger than the sum of its proper divisors (74789869).

1266141011 is an equidigital number, since it uses as much as digits as its factorization.

1266141011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17293.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1266141011 is about 35582.8752491982. The cubic root of 1266141011 is about 1081.8341635130.

Adding to 1266141011 its reverse (1101416621), we get a palindrome (2367557632).

The spelling of 1266141011 in words is "one billion, two hundred sixty-six million, one hundred forty-one thousand, eleven".