220320112012 has 72 divisors (see below), whose sum is σ = 521597114528. Its totient is φ = 79235988480.

The previous prime is 220320111967. The next prime is 220320112021. The reversal of 220320112012 is 210211023022.

It is a happy number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2457093 + ... + 2545180.

Almost surely, 2^220320112012 is an apocalyptic number.

220320112012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

220320112012 is an abundant number, since it is smaller than the sum of its proper divisors (301277002516).

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

220320112012 is a wasteful number, since it uses less digits than its factorization.

220320112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002319 (or 5002306 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 220320112012 its reverse (210211023022), we get a palindrome (430531135034).

The spelling of 220320112012 in words is "two hundred twenty billion, three hundred twenty million, one hundred twelve thousand, twelve".