1001320110 has 128 divisors (see below), whose sum is σ = 3060495360. Its totient is φ = 228210048.

The previous prime is 1001320097. The next prime is 1001320139. The reversal of 1001320110 is 110231001.

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

It is a junction number, because it is equal to n+sod(n) for n = 1001320092 and 1001320101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 987964 + ... + 988976.

It is an arithmetic number, because the mean of its divisors is an integer number (23910120).

Almost surely, 2^1001320110 is an apocalyptic number.

1001320110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001320110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1530247680).

1001320110 is an abundant number, since it is smaller than the sum of its proper divisors (2059175250).

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

1001320110 is a wasteful number, since it uses less digits than its factorization.

1001320110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559 (or 1553 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1001320110 is about 31643.6424894480. The cubic root of 1001320110 is about 1000.4398431763.

Adding to 1001320110 its reverse (110231001), we get a palindrome (1111551111).

The spelling of 1001320110 in words is "one billion, one million, three hundred twenty thousand, one hundred ten".