20001012022120 has 32 divisors (see below), whose sum is σ = 45124899091200. Its totient is φ = 7978605334848.

The previous prime is 20001012022091. The next prime is 20001012022139. The reversal of 20001012022120 is 2122021010002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20001012022120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681218700 + ... + 681248059.

It is an arithmetic number, because the mean of its divisors is an integer number (1410153096600).

Almost surely, 2^{20001012022120} is an apocalyptic number.

20001012022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001012022120 is an abundant number, since it is smaller than the sum of its proper divisors (25123887069080).

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

20001012022120 is a wasteful number, since it uses less digits than its factorization.

20001012022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362467137 (or 1362467133 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20001012022120 its reverse (2122021010002), we get a palindrome (22123033032122).

The spelling of 20001012022120 in words is "twenty trillion, one billion, twelve million, twenty-two thousand, one hundred twenty".