2001120002020 has 24 divisors (see below), whose sum is σ = 4205075563584. Its totient is φ = 799929227616.

The previous prime is 2001120001997. The next prime is 2001120002041. The reversal of 2001120002020 is 202000211002.

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 = 2001120001988 and 2001120002006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32391694 + ... + 32453413.

It is an arithmetic number, because the mean of its divisors is an integer number (175211481816).

Almost surely, 2^{2001120002020} is an apocalyptic number.

2001120002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001120002020 is an abundant number, since it is smaller than the sum of its proper divisors (2203955561564).

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

2001120002020 is a wasteful number, since it uses less digits than its factorization.

2001120002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64846659 (or 64846657 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 2001120002020 its reverse (202000211002), we get a palindrome (2203120213022).

The spelling of 2001120002020 in words is "two trillion, one billion, one hundred twenty million, two thousand, twenty".