1021103120020 has 24 divisors (see below), whose sum is σ = 2144552806368. Its totient is φ = 408396247200.

The previous prime is 1021103120017. The next prime is 1021103120083. The reversal of 1021103120020 is 200213011201.

It is a congruent number.

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, 2626186 + ... + 2989825.

It is an arithmetic number, because the mean of its divisors is an integer number (89356366932).

Almost surely, 2^{1021103120020} is an apocalyptic number.

1021103120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021103120020 is an abundant number, since it is smaller than the sum of its proper divisors (1123449686348).

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

1021103120020 is a wasteful number, since it uses less digits than its factorization.

1021103120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5625111 (or 5625109 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1021103120020 its reverse (200213011201), we get a palindrome (1221316131221).

The spelling of 1021103120020 in words is "one trillion, twenty-one billion, one hundred three million, one hundred twenty thousand, twenty".