11271219556 has 27 divisors (see below), whose sum is σ = 19948215609. Its totient is φ = 5572441008.

The previous prime is 11271219523. The next prime is 11271219559. The reversal of 11271219556 is 65591217211.

The square root of 11271219556 is 106166.

It is a perfect power (a square), and thus also a powerful number.

11271219556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7855985956 + 3415233600 = 88634^2 + 58440^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11271219559) 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 8 ways as a sum of consecutive naturals, for example, 23143945 + ... + 23144431.

Almost surely, 2^11271219556 is an apocalyptic number.

11271219556 is the 106166-th square number.

It is an amenable number.

11271219556 is a deficient number, since it is larger than the sum of its proper divisors (8676996053).

11271219556 is an frugal number, since it uses more digits than its factorization.

11271219556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196 (or 598 counting only the distinct ones).

The product of its digits is 37800, while the sum is 40.

The spelling of 11271219556 in words is "eleven billion, two hundred seventy-one million, two hundred nineteen thousand, five hundred fifty-six".