20001000012 has 48 divisors (see below), whose sum is σ = 53358934272. Its totient is φ = 5712114240.

The previous prime is 20001000001. The next prime is 20001000013. The reversal of 20001000012 is 21000010002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is not an unprimeable number, because it can be changed into a prime (20001000013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150003 + ... + 250005.

It is an arithmetic number, because the mean of its divisors is an integer number (1111644464).

Almost surely, 2^20001000012 is an apocalyptic number.

It is an amenable number.

20001000012 is an abundant number, since it is smaller than the sum of its proper divisors (33357934260).

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

20001000012 is a wasteful number, since it uses less digits than its factorization.

20001000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102398 (or 102396 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 20001000012 its reverse (21000010002), we get a palindrome (41001010014).

The spelling of 20001000012 in words is "twenty billion, one million, twelve", and thus it is an aban number and an uban number.