20010020021120 has 128 divisors (see below), whose sum is σ = 50843040768000. Its totient is φ = 7509125081088.

The previous prime is 20010020020993. The next prime is 20010020021129. The reversal of 20010020021120 is 2112002001002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010020021129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6735680 + ... + 9240639.

It is an arithmetic number, because the mean of its divisors is an integer number (397211256000).

Almost surely, 2^{20010020021120} is an apocalyptic number.

20010020021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010020021120 is an abundant number, since it is smaller than the sum of its proper divisors (30833020746880).

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

20010020021120 is a wasteful number, since it uses less digits than its factorization.

20010020021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15976460 (or 15976448 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20010020021120 its reverse (2112002001002), we get a palindrome (22122022022122).

The spelling of 20010020021120 in words is "twenty trillion, ten billion, twenty million, twenty-one thousand, one hundred twenty".