12229748816 has 10 divisors (see below), whose sum is σ = 23695138362. Its totient is φ = 6114874400.

The previous prime is 12229748803. The next prime is 12229748819. The reversal of 12229748816 is 61884792221.

It can be written as a sum of positive squares in only one way, i.e., 9082090000 + 3147658816 = 95300^2 + 56104^2 .

It is a super-2 number, since 2×12229748816² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12229748819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382179635 + ... + 382179666.

Almost surely, 2^12229748816 is an apocalyptic number.

12229748816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12229748816 is a deficient number, since it is larger than the sum of its proper divisors (11465389546).

12229748816 is an equidigital number, since it uses as much as digits as its factorization.

12229748816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764359309 (or 764359303 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The spelling of 12229748816 in words is "twelve billion, two hundred twenty-nine million, seven hundred forty-eight thousand, eight hundred sixteen".