11219792321 has 4 divisors (see below), whose sum is σ = 11221312452. Its totient is φ = 11218272192.

The previous prime is 11219792293. The next prime is 11219792333. The reversal of 11219792321 is 12329791211.

It is a happy number.

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 8346832321 + 2872960000 = 91361^2 + 53600^2 .

It is a cyclic number.

It is not a de Polignac number, because 11219792321 - 2¹⁸ = 11219530177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11219792371) 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, 748940 + ... + 763773.

It is an arithmetic number, because the mean of its divisors is an integer number (2805328113).

Almost surely, 2^11219792321 is an apocalyptic number.

It is an amenable number.

11219792321 is a deficient number, since it is larger than the sum of its proper divisors (1520131).

11219792321 is an equidigital number, since it uses as much as digits as its factorization.

11219792321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520130.

The product of its digits is 13608, while the sum is 38.

The spelling of 11219792321 in words is "eleven billion, two hundred nineteen million, seven hundred ninety-two thousand, three hundred twenty-one".