2021111000120 has 32 divisors (see below), whose sum is σ = 4814999737200. Its totient is φ = 760888846848.

The previous prime is 2021111000081. The next prime is 2021111000123. The reversal of 2021111000120 is 210001111202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021111000123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1486110350 + ... + 1486111709.

Almost surely, 2^{2021111000120} is an apocalyptic number.

2021111000120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021111000120 is an abundant number, since it is smaller than the sum of its proper divisors (2793888737080).

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

2021111000120 is a wasteful number, since it uses less digits than its factorization.

2021111000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972222087 (or 2972222083 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2021111000120 its reverse (210001111202), we get a palindrome (2231112111322).

The spelling of 2021111000120 in words is "two trillion, twenty-one billion, one hundred eleven million, one hundred twenty", and thus it is an aban number.