12218949548 has 24 divisors (see below), whose sum is σ = 24029240928. Its totient is φ = 5394318336.

The previous prime is 12218949521. The next prime is 12218949557. The reversal of 12218949548 is 84594981221.

It is a self number, because there is not a number n which added to its sum of digits gives 12218949548.

It is an unprimeable number.

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, 5107061 + ... + 5109452.

It is an arithmetic number, because the mean of its divisors is an integer number (1001218372).

Almost surely, 2^12218949548 is an apocalyptic number.

It is an amenable number.

12218949548 is a deficient number, since it is larger than the sum of its proper divisors (11810291380).

12218949548 is a wasteful number, since it uses less digits than its factorization.

12218949548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10216553 (or 10216551 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 53.

The spelling of 12218949548 in words is "twelve billion, two hundred eighteen million, nine hundred forty-nine thousand, five hundred forty-eight".