11832221797 has 6 divisors (see below), whose sum is σ = 13005665414. Its totient is φ = 10756565160.

The previous prime is 11832221759. The next prime is 11832221801. The reversal of 11832221797 is 79712223811.

It can be written as a sum of positive squares in only one way, i.e., 9945275076 + 1886946721 = 99726^2 + 43439^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11832221797 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 (11832251797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48893358 + ... + 48893599.

Almost surely, 2^11832221797 is an apocalyptic number.

It is an amenable number.

11832221797 is a deficient number, since it is larger than the sum of its proper divisors (1173443617).

11832221797 is an equidigital number, since it uses as much as digits as its factorization.

11832221797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97786979 (or 97786968 counting only the distinct ones).

The product of its digits is 84672, while the sum is 43.

The spelling of 11832221797 in words is "eleven billion, eight hundred thirty-two million, two hundred twenty-one thousand, seven hundred ninety-seven".