2021222112020 has 48 divisors (see below), whose sum is σ = 4255965504000. Its totient is φ = 806319615360.

The previous prime is 2021222111977. The next prime is 2021222112031. The reversal of 2021222112020 is 202112221202.

It is a happy number.

It is a super-2 number, since 2×2021222112020² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2021222112020.

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, 16214330 + ... + 16338510.

It is an arithmetic number, because the mean of its divisors is an integer number (88665948000).

Almost surely, 2^{2021222112020} is an apocalyptic number.

2021222112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021222112020 is an abundant number, since it is smaller than the sum of its proper divisors (2234743391980).

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

2021222112020 is a wasteful number, since it uses less digits than its factorization.

2021222112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126368 (or 126366 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2021222112020 its reverse (202112221202), we get a palindrome (2223334333222).

The spelling of 2021222112020 in words is "two trillion, twenty-one billion, two hundred twenty-two million, one hundred twelve thousand, twenty".