12249928388 has 6 divisors (see below), whose sum is σ = 21437374686. Its totient is φ = 6124964192.

The previous prime is 12249928343. The next prime is 12249928393. The reversal of 12249928388 is 88382994221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11321385604 + 928542784 = 106402^2 + 30472^2 .

It is a super-2 number, since 2×12249928388² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1531241045 + ... + 1531241052.

It is an arithmetic number, because the mean of its divisors is an integer number (3572895781).

Almost surely, 2^12249928388 is an apocalyptic number.

It is an amenable number.

12249928388 is a deficient number, since it is larger than the sum of its proper divisors (9187446298).

12249928388 is a wasteful number, since it uses less digits than its factorization.

12249928388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062482101 (or 3062482099 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 56.

The spelling of 12249928388 in words is "twelve billion, two hundred forty-nine million, nine hundred twenty-eight thousand, three hundred eighty-eight".