12219335685 has 12 divisors (see below), whose sum is σ = 21180181932. Its totient is φ = 6516979008.

The previous prime is 12219335683. The next prime is 12219335699. The reversal of 12219335685 is 58653391221.

12219335685 is a `hidden beast` number, since 1 + 2 + 219 + 3 + 356 + 85 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9002404161 + 3216931524 = 94881^2 + 56718^2 .

It is not a de Polignac number, because 12219335685 - 2¹ = 12219335683 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 271540793 = 12219335685 / (1 + 2 + 2 + 1 + 9 + 3 + 3 + 5 + 6 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 12219335685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12219335683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135770352 + ... + 135770441.

It is an arithmetic number, because the mean of its divisors is an integer number (1765015161).

Almost surely, 2^12219335685 is an apocalyptic number.

12219335685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12219335685 is a deficient number, since it is larger than the sum of its proper divisors (8960846247).

12219335685 is a wasteful number, since it uses less digits than its factorization.

12219335685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271540804 (or 271540801 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The spelling of 12219335685 in words is "twelve billion, two hundred nineteen million, three hundred thirty-five thousand, six hundred eighty-five".