11441215091 has 4 divisors (see below), whose sum is σ = 11472390432. Its totient is φ = 11410039752.

The previous prime is 11441215069. The next prime is 11441215109. The reversal of 11441215091 is 19051214411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19051214411 = 307 ⋅62056073.

It is a cyclic number.

It is not a de Polignac number, because 11441215091 - 2²² = 11437020787 is a prime.

It is a super-2 number, since 2×11441215091² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11441215991) 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 3 ways as a sum of consecutive naturals, for example, 15587120 + ... + 15587853.

It is an arithmetic number, because the mean of its divisors is an integer number (2868097608).

Almost surely, 2^11441215091 is an apocalyptic number.

11441215091 is a deficient number, since it is larger than the sum of its proper divisors (31175341).

11441215091 is an equidigital number, since it uses as much as digits as its factorization.

11441215091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31175340.

The product of its (nonzero) digits is 1440, while the sum is 29.

The spelling of 11441215091 in words is "eleven billion, four hundred forty-one million, two hundred fifteen thousand, ninety-one".