20002200012 has 18 divisors (see below), whose sum is σ = 50561116788. Its totient is φ = 6667399992.

The previous prime is 20002200007. The next prime is 20002200013. The reversal of 20002200012 is 21000220002.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20002199967 and 20002200003.

It is not an unprimeable number, because it can be changed into a prime (20002200013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277808298 + ... + 277808369.

Almost surely, 2^20002200012 is an apocalyptic number.

It is an amenable number.

20002200012 is an abundant number, since it is smaller than the sum of its proper divisors (30558916776).

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

20002200012 is a wasteful number, since it uses less digits than its factorization.

20002200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555616677 (or 555616672 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20002200012 its reverse (21000220002), we get a palindrome (41002420014).

The spelling of 20002200012 in words is "twenty billion, two million, two hundred thousand, twelve".