11276712221 has 4 divisors (see below), whose sum is σ = 11940048252. Its totient is φ = 10613376192.

The previous prime is 11276712199. The next prime is 11276712253. The reversal of 11276712221 is 12221767211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9276386596 + 2000325625 = 96314^2 + 44725^2 .

It is a cyclic number.

It is not a de Polignac number, because 11276712221 - 2¹⁰ = 11276711197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11276712281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331667990 + ... + 331668023.

It is an arithmetic number, because the mean of its divisors is an integer number (2985012063).

Almost surely, 2^11276712221 is an apocalyptic number.

It is an amenable number.

11276712221 is a deficient number, since it is larger than the sum of its proper divisors (663336031).

11276712221 is an equidigital number, since it uses as much as digits as its factorization.

11276712221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663336030.

The product of its digits is 4704, while the sum is 32.

The spelling of 11276712221 in words is "eleven billion, two hundred seventy-six million, seven hundred twelve thousand, two hundred twenty-one".