1021033486820 has 12 divisors (see below), whose sum is σ = 2144170322364. Its totient is φ = 408413394720.

The previous prime is 1021033486817. The next prime is 1021033486861. The reversal of 1021033486820 is 286843301201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 433532698624 + 587500788196 = 658432^2 + 766486^2 .

It is a super-2 number, since 2×1021033486820² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25525837151 + ... + 25525837190.

It is an arithmetic number, because the mean of its divisors is an integer number (178680860197).

Almost surely, 2^{1021033486820} is an apocalyptic number.

1021033486820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021033486820 is an abundant number, since it is smaller than the sum of its proper divisors (1123136835544).

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

1021033486820 is a wasteful number, since it uses less digits than its factorization.

1021033486820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51051674350 (or 51051674348 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 1021033486820 in words is "one trillion, twenty-one billion, thirty-three million, four hundred eighty-six thousand, eight hundred twenty".