2101020022020 has 384 divisors, whose sum is σ = 6625285373952. Its totient is φ = 494987673600.

The previous prime is 2101020022009. The next prime is 2101020022039. The reversal of 2101020022020 is 202200201012.

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 = 2101020021987 and 2101020022005.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 167927565 + ... + 167940075.

It is an arithmetic number, because the mean of its divisors is an integer number (17253347328).

Almost surely, 2^{2101020022020} is an apocalyptic number.

2101020022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101020022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3312642686976).

2101020022020 is an abundant number, since it is smaller than the sum of its proper divisors (4524265351932).

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

2101020022020 is a wasteful number, since it uses less digits than its factorization.

2101020022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12731 (or 12729 counting only the distinct ones).

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

Adding to 2101020022020 its reverse (202200201012), we get a palindrome (2303220223032).

The spelling of 2101020022020 in words is "two trillion, one hundred one billion, twenty million, twenty-two thousand, twenty".