12219784784 has 10 divisors (see below), whose sum is σ = 23675833050. Its totient is φ = 6109892384.

The previous prime is 12219784783. The next prime is 12219784799. The reversal of 12219784784 is 48748791221.

It can be written as a sum of positive squares in only one way, i.e., 6785146384 + 5434638400 = 82372^2 + 73720^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12219784783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 381868259 + ... + 381868290.

It is an arithmetic number, because the mean of its divisors is an integer number (2367583305).

Almost surely, 2^12219784784 is an apocalyptic number.

It is an amenable number.

12219784784 is a deficient number, since it is larger than the sum of its proper divisors (11456048266).

12219784784 is an equidigital number, since it uses as much as digits as its factorization.

12219784784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763736557 (or 763736551 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 53.

The spelling of 12219784784 in words is "twelve billion, two hundred nineteen million, seven hundred eighty-four thousand, seven hundred eighty-four".