12213784858 has 16 divisors (see below), whose sum is σ = 21038099040. Its totient is φ = 5259524400.

The previous prime is 12213784837. The next prime is 12213784859. The reversal of 12213784858 is 85848731221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12213784859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14609373 + ... + 14610208.

It is an arithmetic number, because the mean of its divisors is an integer number (1314881190).

Almost surely, 2^12213784858 is an apocalyptic number.

12213784858 is a deficient number, since it is larger than the sum of its proper divisors (8824314182).

12213784858 is a wasteful number, since it uses less digits than its factorization.

12213784858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29219613.

The product of its digits is 860160, while the sum is 49.

The spelling of 12213784858 in words is "twelve billion, two hundred thirteen million, seven hundred eighty-four thousand, eight hundred fifty-eight".