12185001822 has 32 divisors (see below), whose sum is σ = 27878033664. Its totient is φ = 3478104000.

The previous prime is 12185001781. The next prime is 12185001823. The reversal of 12185001822 is 22810058121.

It is a self number, because there is not a number n which added to its sum of digits gives 12185001822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12185001823) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 93879 + ... + 182162.

It is an arithmetic number, because the mean of its divisors is an integer number (871188552).

Almost surely, 2^12185001822 is an apocalyptic number.

12185001822 is an abundant number, since it is smaller than the sum of its proper divisors (15693031842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12185001822 is a wasteful number, since it uses less digits than its factorization.

12185001822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277104.

The product of its (nonzero) digits is 2560, while the sum is 30.

Adding to 12185001822 its reverse (22810058121), we get a palindrome (34995059943).

The spelling of 12185001822 in words is "twelve billion, one hundred eighty-five million, one thousand, eight hundred twenty-two".