20120100120012 has 48 divisors (see below), whose sum is σ = 47946340012032. Its totient is φ = 6563926325760.

The previous prime is 20120100119887. The next prime is 20120100120013. The reversal of 20120100120012 is 21002100102102.

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 20120100120012.

It is not an unprimeable number, because it can be changed into a prime (20120100120013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65198437 + ... + 65506307.

It is an arithmetic number, because the mean of its divisors is an integer number (998882083584).

Almost surely, 2^{20120100120012} is an apocalyptic number.

It is an amenable number.

20120100120012 is an abundant number, since it is smaller than the sum of its proper divisors (27826239892020).

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

20120100120012 is a wasteful number, since it uses less digits than its factorization.

20120100120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423798 (or 423796 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20120100120012 its reverse (21002100102102), we get a palindrome (41122200222114).

The spelling of 20120100120012 in words is "twenty trillion, one hundred twenty billion, one hundred million, one hundred twenty thousand, twelve".