2110001200020 has 216 divisors, whose sum is σ = 7646515183944. Its totient is φ = 469251159552.

The previous prime is 2110001199989. The next prime is 2110001200049. The reversal of 2110001200020 is 200021000112.

It can be written as a sum of positive squares in 4 ways, for example, as 274875809796 + 1835125390224 = 524286^2 + 1354668^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2110001199975 and 2110001200011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2906487 + ... + 3559166.

It is an arithmetic number, because the mean of its divisors is an integer number (35400533259).

Almost surely, 2^{2110001200020} is an apocalyptic number.

2110001200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2110001200020 is an abundant number, since it is smaller than the sum of its proper divisors (5536513983924).

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

2110001200020 is a wasteful number, since it uses less digits than its factorization.

2110001200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6465719 (or 6465707 counting only the distinct ones).

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

Adding to 2110001200020 its reverse (200021000112), we get a palindrome (2310022200132).

The spelling of 2110001200020 in words is "two trillion, one hundred ten billion, one million, two hundred thousand, twenty".