1001002201120 has 144 divisors (see below), whose sum is σ = 2485804845888. Its totient is φ = 380820464640.

The previous prime is 1001002201103. The next prime is 1001002201139. The reversal of 1001002201120 is 211022001001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1001002201097 and 1001002201106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8960005 + ... + 9071035.

It is an arithmetic number, because the mean of its divisors is an integer number (17262533652).

Almost surely, 2^{1001002201120} is an apocalyptic number.

1001002201120 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 1001002201120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1242902422944).

1001002201120 is an abundant number, since it is smaller than the sum of its proper divisors (1484802644768).

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

1001002201120 is a wasteful number, since it uses less digits than its factorization.

1001002201120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111171 (or 111134 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1001002201120 its reverse (211022001001), we get a palindrome (1212024202121).

The spelling of 1001002201120 in words is "one trillion, one billion, two million, two hundred one thousand, one hundred twenty".