1021021130020 has 12 divisors (see below), whose sum is σ = 2144144373084. Its totient is φ = 408408452000.

The previous prime is 1021021129991. The next prime is 1021021130033. The reversal of 1021021130020 is 200311201201.

1021021130020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 455700603136 + 565320526884 = 675056^2 + 751878^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25525528231 + ... + 25525528270.

It is an arithmetic number, because the mean of its divisors is an integer number (178678697757).

Almost surely, 2^{1021021130020} is an apocalyptic number.

1021021130020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021021130020 is an abundant number, since it is smaller than the sum of its proper divisors (1123123243064).

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

1021021130020 is a wasteful number, since it uses less digits than its factorization.

1021021130020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51051056510 (or 51051056508 counting only the distinct ones).

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

Adding to 1021021130020 its reverse (200311201201), we get a palindrome (1221332331221).

The spelling of 1021021130020 in words is "one trillion, twenty-one billion, twenty-one million, one hundred thirty thousand, twenty".