1001021202000 has 240 divisors, whose sum is σ = 3498039896832. Its totient is φ = 266801068800.

The previous prime is 1001021201993. The next prime is 1001021202047. The reversal of 1001021202000 is 2021201001.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (9).

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 47 ways as a sum of consecutive naturals, for example, 37552677 + ... + 37579323.

Almost surely, 2^{1001021202000} is an apocalyptic number.

1001021202000 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 1001021202000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1749019948416).

1001021202000 is an abundant number, since it is smaller than the sum of its proper divisors (2497018694832).

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

1001021202000 is a wasteful number, since it uses less digits than its factorization.

1001021202000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28763 (or 28744 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1001021202000 its reverse (2021201001), we get a palindrome (1003042403001).

Subtracting from 1001021202000 its reverse (2021201001), we obtain a palindrome (999000000999).

It can be divided in two parts, 1001021 and 202000, that added together give a palindrome (1203021).

The spelling of 1001021202000 in words is "one trillion, one billion, twenty-one million, two hundred two thousand".