220142312012 has 12 divisors (see below), whose sum is σ = 440284624080. Its totient is φ = 94346705136.

The previous prime is 220142312009. The next prime is 220142312017. The reversal of 220142312012 is 210213241022.

220142312012 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (220142312017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3931112687 + ... + 3931112742.

It is an arithmetic number, because the mean of its divisors is an integer number (36690385340).

Almost surely, 2^220142312012 is an apocalyptic number.

It is an amenable number.

220142312012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

220142312012 is a wasteful number, since it uses less digits than its factorization.

220142312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7862225440 (or 7862225438 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 220142312012 its reverse (210213241022), we get a palindrome (430355553034).

The spelling of 220142312012 in words is "two hundred twenty billion, one hundred forty-two million, three hundred twelve thousand, twelve".