2021110110120 has 64 divisors (see below), whose sum is σ = 6140081376000. Its totient is φ = 532140380928.

The previous prime is 2021110110101. The next prime is 2021110110139. The reversal of 2021110110120 is 210110111202.

It is an interprime number because it is at equal distance from previous prime (2021110110101) and next prime (2021110110139).

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 = 2021110110096 and 2021110110105.

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, 106589155 + ... + 106608114.

It is an arithmetic number, because the mean of its divisors is an integer number (95938771500).

Almost surely, 2^{2021110110120} is an apocalyptic number.

2021110110120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021110110120 is an abundant number, since it is smaller than the sum of its proper divisors (4118971265880).

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

2021110110120 is a wasteful number, since it uses less digits than its factorization.

2021110110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213197362 (or 213197358 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2021110110120 its reverse (210110111202), we get a palindrome (2231220221322).

The spelling of 2021110110120 in words is "two trillion, twenty-one billion, one hundred ten million, one hundred ten thousand, one hundred twenty".