11751521223 has 32 divisors (see below), whose sum is σ = 17854332160. Its totient is φ = 6815508480.

The previous prime is 11751521183. The next prime is 11751521227. The reversal of 11751521223 is 32212515711.

It is not a de Polignac number, because 11751521223 - 2¹⁷ = 11751390151 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 (11751521227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101928 + ... + 184098.

It is an arithmetic number, because the mean of its divisors is an integer number (557947880).

Almost surely, 2^11751521223 is an apocalyptic number.

11751521223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11751521223 is a deficient number, since it is larger than the sum of its proper divisors (6102810937).

11751521223 is a wasteful number, since it uses less digits than its factorization.

11751521223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82399.

The product of its digits is 4200, while the sum is 30.

The spelling of 11751521223 in words is "eleven billion, seven hundred fifty-one million, five hundred twenty-one thousand, two hundred twenty-three".