1021110002020 has 96 divisors (see below), whose sum is σ = 2200074589440. Its totient is φ = 398003673600.

The previous prime is 1021110001993. The next prime is 1021110002039. The reversal of 1021110002020 is 202000111201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1021110001988 and 1021110002006.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33898726 + ... + 33928834.

It is an arithmetic number, because the mean of its divisors is an integer number (22917443640).

Almost surely, 2^{1021110002020} is an apocalyptic number.

1021110002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021110002020 is an abundant number, since it is smaller than the sum of its proper divisors (1178964587420).

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

1021110002020 is a wasteful number, since it uses less digits than its factorization.

1021110002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30485 (or 30483 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1021110002020 its reverse (202000111201), we get a palindrome (1223110113221).

The spelling of 1021110002020 in words is "one trillion, twenty-one billion, one hundred ten million, two thousand, twenty".