20001020220012 has 48 divisors (see below), whose sum is σ = 50259815432960. Its totient is φ = 6154057021248.

The previous prime is 20001020219993. The next prime is 20001020220023. The reversal of 20001020220012 is 21002202010002.

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 20001020220012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8548689 + ... + 10634007.

Almost surely, 2^{20001020220012} is an apocalyptic number.

It is an amenable number.

20001020220012 is an abundant number, since it is smaller than the sum of its proper divisors (30258795212948).

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

20001020220012 is a wasteful number, since it uses less digits than its factorization.

20001020220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146822 (or 2146820 counting only the distinct ones).

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

Adding to 20001020220012 its reverse (21002202010002), we get a palindrome (41003222230014).

The spelling of 20001020220012 in words is "twenty trillion, one billion, twenty million, two hundred twenty thousand, twelve".