220120002012 has 12 divisors (see below), whose sum is σ = 513613338056. Its totient is φ = 73373334000.

The previous prime is 220120001993. The next prime is 220120002023. The reversal of 220120002012 is 210200021022.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 18343333501 = 220120002012 / (2 + 2 + 0 + 1 + 2 + 0 + 0 + 0 + 2 + 0 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9171666739 + ... + 9171666762.

Almost surely, 2^220120002012 is an apocalyptic number.

It is an amenable number.

220120002012 is an abundant number, since it is smaller than the sum of its proper divisors (293493336044).

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

220120002012 is a wasteful number, since it uses less digits than its factorization.

220120002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18343333508 (or 18343333506 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 220120002012 its reverse (210200021022), we get a palindrome (430320023034).

The spelling of 220120002012 in words is "two hundred twenty billion, one hundred twenty million, two thousand, twelve".