20102020001001 has 12 divisors (see below), whose sum is σ = 29036461238512. Its totient is φ = 13401249686136.

The previous prime is 20102020000987. The next prime is 20102020001051. The reversal of 20102020001001 is 10010002020102.

It is not a de Polignac number, because 20102020001001 - 2⁵ = 20102020000969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20102020001051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6757591 + ... + 9266556.

Almost surely, 2^{20102020001001} is an apocalyptic number.

It is an amenable number.

20102020001001 is a deficient number, since it is larger than the sum of its proper divisors (8934441237511).

20102020001001 is a wasteful number, since it uses less digits than its factorization.

20102020001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16163540 (or 16163537 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20102020001001 its reverse (10010002020102), we get a palindrome (30112022021103).

The spelling of 20102020001001 in words is "twenty trillion, one hundred two billion, twenty million, one thousand, one".