1021329953076 has 96 divisors (see below), whose sum is σ = 2485060300800. Its totient is φ = 326076983680.

The previous prime is 1021329953009. The next prime is 1021329953099. The reversal of 1021329953076 is 6703599231201.

It is a super-2 number, since 2×1021329953076² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21850891 + ... + 21897581.

It is an arithmetic number, because the mean of its divisors is an integer number (25886044800).

Almost surely, 2^{1021329953076} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021329953076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1242530150400).

1021329953076 is an abundant number, since it is smaller than the sum of its proper divisors (1463730347724).

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

1021329953076 is a wasteful number, since it uses less digits than its factorization.

1021329953076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47229 (or 47227 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 48.

The spelling of 1021329953076 in words is "one trillion, twenty-one billion, three hundred twenty-nine million, nine hundred fifty-three thousand, seventy-six".