2111100202020 has 24 divisors (see below), whose sum is σ = 5911080565824. Its totient is φ = 562960053856.

The previous prime is 2111100202009. The next prime is 2111100202129. The reversal of 2111100202020 is 202020011112.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2111100201987 and 2111100202005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17592501624 + ... + 17592501743.

It is an arithmetic number, because the mean of its divisors is an integer number (246295023576).

Almost surely, 2^{2111100202020} is an apocalyptic number.

2111100202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111100202020 is an abundant number, since it is smaller than the sum of its proper divisors (3799980363804).

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

2111100202020 is a wasteful number, since it uses less digits than its factorization.

2111100202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35185003379 (or 35185003377 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2111100202020 its reverse (202020011112), we get a palindrome (2313120213132).

The spelling of 2111100202020 in words is "two trillion, one hundred eleven billion, one hundred million, two hundred two thousand, twenty".