12219754850 has 24 divisors (see below), whose sum is σ = 23101352148. Its totient is φ = 4807771200.

The previous prime is 12219754793. The next prime is 12219754903. The reversal of 12219754850 is 5845791221.

It is a Cunningham number, because it is equal to 110543²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 1 + 12219754849 = 1^2 + 110543^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2000189 + ... + 2006288.

Almost surely, 2^12219754850 is an apocalyptic number.

12219754850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12219754850 is a deficient number, since it is larger than the sum of its proper divisors (10881597298).

12219754850 is a wasteful number, since it uses less digits than its factorization.

12219754850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006550 (or 4006545 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 12219754850 in words is "twelve billion, two hundred nineteen million, seven hundred fifty-four thousand, eight hundred fifty".