20010111002020 has 96 divisors (see below), whose sum is σ = 44545506042240. Its totient is φ = 7524345354240.

The previous prime is 20010111001999. The next prime is 20010111002023. The reversal of 20010111002020 is 2020011101002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20010111001988 and 20010111002006.

It is not an unprimeable number, because it can be changed into a prime (20010111002023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1271363311 + ... + 1271379049.

It is an arithmetic number, because the mean of its divisors is an integer number (464015687940).

Almost surely, 2^{20010111002020} is an apocalyptic number.

20010111002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010111002020 is an abundant number, since it is smaller than the sum of its proper divisors (24535395040220).

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

20010111002020 is a wasteful number, since it uses less digits than its factorization.

20010111002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19933 (or 19931 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20010111002020 its reverse (2020011101002), we get a palindrome (22030122103022).

The spelling of 20010111002020 in words is "twenty trillion, ten billion, one hundred eleven million, two thousand, twenty".