1266053211 has 24 divisors (see below), whose sum is σ = 1877204160. Its totient is φ = 821938416.

The previous prime is 1266053207. The next prime is 1266053249. The reversal of 1266053211 is 1123506621.

1266053211 is a `hidden beast` number, since 1 + 26 + 605 + 32 + 1 + 1 = 666.

It is not a de Polignac number, because 1266053211 - 2² = 1266053207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1266053911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45676 + ... + 67958.

It is an arithmetic number, because the mean of its divisors is an integer number (78216840).

Almost surely, 2^1266053211 is an apocalyptic number.

1266053211 is a deficient number, since it is larger than the sum of its proper divisors (611150949).

1266053211 is a wasteful number, since it uses less digits than its factorization.

1266053211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22455 (or 22452 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1266053211 is about 35581.6414882731. The cubic root of 1266053211 is about 1081.8091564945.

Adding to 1266053211 its reverse (1123506621), we get a palindrome (2389559832).

The spelling of 1266053211 in words is "one billion, two hundred sixty-six million, fifty-three thousand, two hundred eleven".