10821267266 has 4 divisors (see below), whose sum is σ = 16231900902. Its totient is φ = 5410633632.

The previous prime is 10821267221. The next prime is 10821267269. The reversal of 10821267266 is 66276212801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5523611041 + 5297656225 = 74321^2 + 72785^2 .

It is a super-2 number, since 2×10821267266² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10821267269) 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, 2705316815 + ... + 2705316818.

Almost surely, 2^10821267266 is an apocalyptic number.

10821267266 is a deficient number, since it is larger than the sum of its proper divisors (5410633636).

10821267266 is an equidigital number, since it uses as much as digits as its factorization.

10821267266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5410633635.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 10821267266 in words is "ten billion, eight hundred twenty-one million, two hundred sixty-seven thousand, two hundred sixty-six".