11217961223 has 32 divisors (see below), whose sum is σ = 13126632960. Its totient is φ = 9389520000.

The previous prime is 11217961193. The next prime is 11217961259. The reversal of 11217961223 is 32216971211.

It is not a de Polignac number, because 11217961223 - 2⁶ = 11217961159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11217964223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20735333 + ... + 20735873.

It is an arithmetic number, because the mean of its divisors is an integer number (410207280).

Almost surely, 2^11217961223 is an apocalyptic number.

11217961223 is a deficient number, since it is larger than the sum of its proper divisors (1908671737).

11217961223 is a wasteful number, since it uses less digits than its factorization.

11217961223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999.

The product of its digits is 9072, while the sum is 35.

The spelling of 11217961223 in words is "eleven billion, two hundred seventeen million, nine hundred sixty-one thousand, two hundred twenty-three".