20201100000012 has 72 divisors (see below), whose sum is σ = 52675028458416. Its totient is φ = 6522845860224.

The previous prime is 20201099999897. The next prime is 20201100000047. The reversal of 20201100000012 is 21000000110202.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33102903 + ... + 33707630.

It is an arithmetic number, because the mean of its divisors is an integer number (731597617478).

Almost surely, 2^{20201100000012} is an apocalyptic number.

It is an amenable number.

20201100000012 is an abundant number, since it is smaller than the sum of its proper divisors (32473928458404).

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

20201100000012 is a wasteful number, since it uses less digits than its factorization.

20201100000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66810807 (or 66810802 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20201100000012 its reverse (21000000110202), we get a palindrome (41201100110214).

The spelling of 20201100000012 in words is "twenty trillion, two hundred one billion, one hundred million, twelve", and thus it is an aban number.