20003220012 has 24 divisors (see below), whose sum is σ = 46679161536. Its totient is φ = 6667028368.

The previous prime is 20003220001. The next prime is 20003220031. The reversal of 20003220012 is 21002230002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 20003220012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35083 + ... + 203069.

It is an arithmetic number, because the mean of its divisors is an integer number (1944965064).

Almost surely, 2^20003220012 is an apocalyptic number.

It is an amenable number.

20003220012 is an abundant number, since it is smaller than the sum of its proper divisors (26675941524).

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

20003220012 is a wasteful number, since it uses less digits than its factorization.

20003220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177917 (or 177915 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20003220012 its reverse (21002230002), we get a palindrome (41005450014).

The spelling of 20003220012 in words is "twenty billion, three million, two hundred twenty thousand, twelve".