11220231791 has 8 divisors (see below), whose sum is σ = 11608333824. Its totient is φ = 10833764760.

The previous prime is 11220231773. The next prime is 11220231851. The reversal of 11220231791 is 19713202211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11220231791 - 2¹⁸ = 11219969647 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 (11220231751) 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 7 ways as a sum of consecutive naturals, for example, 394781 + ... + 422246.

It is an arithmetic number, because the mean of its divisors is an integer number (1451041728).

Almost surely, 2^11220231791 is an apocalyptic number.

11220231791 is a deficient number, since it is larger than the sum of its proper divisors (388102033).

11220231791 is an equidigital number, since it uses as much as digits as its factorization.

11220231791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817501.

The product of its (nonzero) digits is 1512, while the sum is 29.

The spelling of 11220231791 in words is "eleven billion, two hundred twenty million, two hundred thirty-one thousand, seven hundred ninety-one".