2021011022020 has 24 divisors (see below), whose sum is σ = 4244407038144. Its totient is φ = 808350334176.

The previous prime is 2021011022011. The next prime is 2021011022029. The reversal of 2021011022020 is 202201101202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2021011022011) and next prime (2021011022029).

It is a super-2 number, since 2×2021011022020² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2021011022029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3072514 + ... + 3671833.

It is an arithmetic number, because the mean of its divisors is an integer number (176850293256).

Almost surely, 2^{2021011022020} is an apocalyptic number.

2021011022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021011022020 is an abundant number, since it is smaller than the sum of its proper divisors (2223396016124).

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

2021011022020 is a wasteful number, since it uses less digits than its factorization.

2021011022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6759339 (or 6759337 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2021011022020 its reverse (202201101202), we get a palindrome (2223212123222).

The spelling of 2021011022020 in words is "two trillion, twenty-one billion, eleven million, twenty-two thousand, twenty".