1021011020000 has 240 divisors, whose sum is σ = 2547495165600. Its totient is φ = 402643200000.

The previous prime is 1021011019993. The next prime is 1021011020119. The reversal of 1021011020000 is 201101201.

It is a super-2 number, since 2×1021011020000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1021011020000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 543379061 + ... + 543380939.

It is an arithmetic number, because the mean of its divisors is an integer number (10614563190).

Almost surely, 2^{1021011020000} is an apocalyptic number.

1021011020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021011020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1273747582800).

1021011020000 is an abundant number, since it is smaller than the sum of its proper divisors (1526484145600).

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

1021011020000 is a wasteful number, since it uses less digits than its factorization.

1021011020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279 (or 2256 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1021011020000 its reverse (201101201), we get a palindrome (1021212121201).

The spelling of 1021011020000 in words is "one trillion, twenty-one billion, eleven million, twenty thousand".