2021220021120 has 128 divisors (see below), whose sum is σ = 6821617681440. Its totient is φ = 507286585344.

The previous prime is 2021220021049. The next prime is 2021220021193. The reversal of 2021220021120 is 211200221202.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-3 number, since 3×2021220021120³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2021220021120.

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, 30929677 + ... + 30994956.

Almost surely, 2^{2021220021120} is an apocalyptic number.

2021220021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021220021120 is an abundant number, since it is smaller than the sum of its proper divisors (4800397660320).

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

2021220021120 is a wasteful number, since it uses less digits than its factorization.

2021220021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61924672 (or 61924660 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2021220021120 its reverse (211200221202), we get a palindrome (2232420242322).

The spelling of 2021220021120 in words is "two trillion, twenty-one billion, two hundred twenty million, twenty-one thousand, one hundred twenty".