220000012523 has 4 divisors (see below), whose sum is σ = 225116291928. Its totient is φ = 214883733120.

The previous prime is 220000012511. The next prime is 220000012537. The reversal of 220000012523 is 325210000022.

220000012523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220000012523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220000012423) 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 3 ways as a sum of consecutive naturals, for example, 2558139638 + ... + 2558139723.

It is an arithmetic number, because the mean of its divisors is an integer number (56279072982).

Almost surely, 2^220000012523 is an apocalyptic number.

220000012523 is a deficient number, since it is larger than the sum of its proper divisors (5116279405).

220000012523 is an equidigital number, since it uses as much as digits as its factorization.

220000012523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5116279404.

The product of its (nonzero) digits is 240, while the sum is 17.

Adding to 220000012523 its reverse (325210000022), we get a palindrome (545210012545).

The spelling of 220000012523 in words is "two hundred twenty billion, twelve thousand, five hundred twenty-three".