20101021011120 has 160 divisors (see below), whose sum is σ = 71251596748800. Its totient is φ = 4592160967680.

The previous prime is 20101021011119. The next prime is 20101021011139. The reversal of 20101021011120 is 2111012010102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20101021011096 and 20101021011105.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 204825 + ... + 6343815.

It is an arithmetic number, because the mean of its divisors is an integer number (445322479680).

Almost surely, 2^{20101021011120} is an apocalyptic number.

20101021011120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20101021011120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35625798374400).

20101021011120 is an abundant number, since it is smaller than the sum of its proper divisors (51150575737680).

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

20101021011120 is a wasteful number, since it uses less digits than its factorization.

20101021011120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6140963 (or 6140957 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20101021011120 its reverse (2111012010102), we get a palindrome (22212033021222).

The spelling of 20101021011120 in words is "twenty trillion, one hundred one billion, twenty-one million, eleven thousand, one hundred twenty".