2001000111020 has 48 divisors (see below), whose sum is σ = 4205642103936. Its totient is φ = 799725696000.

The previous prime is 2001000111017. The next prime is 2001000111043. The reversal of 2001000111020 is 201110001002.

It is a junction number, because it is equal to n+sod(n) for n = 2001000110989 and 2001000111007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166176200 + ... + 166188240.

It is an arithmetic number, because the mean of its divisors is an integer number (87617543832).

Almost surely, 2^{2001000111020} is an apocalyptic number.

2001000111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001000111020 is an abundant number, since it is smaller than the sum of its proper divisors (2204641992916).

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

2001000111020 is a wasteful number, since it uses less digits than its factorization.

2001000111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18362 (or 18360 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 2001000111020 its reverse (201110001002), we get a palindrome (2202110112022).

The spelling of 2001000111020 in words is "two trillion, one billion, one hundred eleven thousand, twenty".