20011011022120 has 64 divisors (see below), whose sum is σ = 46024670292480. Its totient is φ = 7826955741696.

The previous prime is 20011011022117. The next prime is 20011011022129. The reversal of 20011011022120 is 2122011011002.

It is a self number, because there is not a number n which added to its sum of digits gives 20011011022120.

It is not an unprimeable number, because it can be changed into a prime (20011011022129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2789124 + ... + 6913843.

It is an arithmetic number, because the mean of its divisors is an integer number (719135473320).

Almost surely, 2^{20011011022120} is an apocalyptic number.

20011011022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011011022120 is an abundant number, since it is smaller than the sum of its proper divisors (26013659270360).

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

20011011022120 is a wasteful number, since it uses less digits than its factorization.

20011011022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9704122 (or 9704118 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20011011022120 its reverse (2122011011002), we get a palindrome (22133022033122).

The spelling of 20011011022120 in words is "twenty trillion, eleven billion, eleven million, twenty-two thousand, one hundred twenty".