2021220010020 has 24 divisors (see below), whose sum is σ = 5659416028224. Its totient is φ = 538992002656.

The previous prime is 2021220010009. The next prime is 2021220010031. The reversal of 2021220010020 is 200100221202.

It is an interprime number because it is at equal distance from previous prime (2021220010009) and next prime (2021220010031).

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 = 2021220009978 and 2021220010005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16843500024 + ... + 16843500143.

It is an arithmetic number, because the mean of its divisors is an integer number (235809001176).

Almost surely, 2^{2021220010020} is an apocalyptic number.

2021220010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021220010020 is an abundant number, since it is smaller than the sum of its proper divisors (3638196018204).

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

2021220010020 is a wasteful number, since it uses less digits than its factorization.

2021220010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33687000179 (or 33687000177 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2021220010020 its reverse (200100221202), we get a palindrome (2221320231222).

The spelling of 2021220010020 in words is "two trillion, twenty-one billion, two hundred twenty million, ten thousand, twenty".