2021111120120 has 64 divisors (see below), whose sum is σ = 4867975152000. Its totient is φ = 752913456768.

The previous prime is 2021111120087. The next prime is 2021111120131. The reversal of 2021111120120 is 210211111202.

It is a junction number, because it is equal to n+sod(n) for n = 2021111120095 and 2021111120104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22492082 + ... + 22581761.

It is an arithmetic number, because the mean of its divisors is an integer number (76062111750).

Almost surely, 2^{2021111120120} is an apocalyptic number.

2021111120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021111120120 is an abundant number, since it is smaller than the sum of its proper divisors (2846864031880).

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

2021111120120 is a wasteful number, since it uses less digits than its factorization.

2021111120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45073932 (or 45073928 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2021111120120 its reverse (210211111202), we get a palindrome (2231322231322).

It can be divided in two parts, 202111 and 1120120, that added together give a palindrome (1322231).

The spelling of 2021111120120 in words is "two trillion, twenty-one billion, one hundred eleven million, one hundred twenty thousand, one hundred twenty".