220523604012 has 36 divisors (see below), whose sum is σ = 561175851600. Its totient is φ = 73014524832.

The previous prime is 220523604011. The next prime is 220523604017. The reversal of 220523604012 is 210406325022.

It is a happy number.

220523604012 is a `hidden beast` number, since 2 + 2 + 0 + 52 + 3 + 604 + 0 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×220523604012² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220523604011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20550528 + ... + 20561255.

It is an arithmetic number, because the mean of its divisors is an integer number (15588218100).

Almost surely, 2^220523604012 is an apocalyptic number.

It is an amenable number.

220523604012 is an abundant number, since it is smaller than the sum of its proper divisors (340652247588).

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

220523604012 is a wasteful number, since it uses less digits than its factorization.

220523604012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41111942 (or 41111937 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 220523604012 its reverse (210406325022), we get a palindrome (430929929034).

The spelling of 220523604012 in words is "two hundred twenty billion, five hundred twenty-three million, six hundred four thousand, twelve".