20100101001000 has 256 divisors, whose sum is σ = 65044974309120. Its totient is φ = 5163523200000.

The previous prime is 20100101000983. The next prime is 20100101001031. The reversal of 20100101001000 is 10010100102.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 20100101001000.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10314555 + ... + 12107445.

It is an arithmetic number, because the mean of its divisors is an integer number (254081930895).

Almost surely, 2^{20100101001000} is an apocalyptic number.

20100101001000 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 20100101001000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32522487154560).

20100101001000 is an abundant number, since it is smaller than the sum of its proper divisors (44944873308120).

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

20100101001000 is a wasteful number, since it uses less digits than its factorization.

20100101001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793053 (or 1793039 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 20100101001000 its reverse (10010100102), we get a palindrome (20110111101102).

The spelling of 20100101001000 in words is "twenty trillion, one hundred billion, one hundred one million, one thousand".