1001113120220 has 72 divisors (see below), whose sum is σ = 2173814812512. Its totient is φ = 387265034880.

The previous prime is 1001113120213. The next prime is 1001113120243. The reversal of 1001113120220 is 220213111001.

It is a junction number, because it is equal to n+sod(n) for n = 1001113120195 and 1001113120204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29639582 + ... + 29673338.

It is an arithmetic number, because the mean of its divisors is an integer number (30191872396).

Almost surely, 2^{1001113120220} is an apocalyptic number.

1001113120220 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 1001113120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1086907406256).

1001113120220 is an abundant number, since it is smaller than the sum of its proper divisors (1172701692292).

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

1001113120220 is a wasteful number, since it uses less digits than its factorization.

1001113120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35371 (or 35338 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1001113120220 its reverse (220213111001), we get a palindrome (1221326231221).

The spelling of 1001113120220 in words is "one trillion, one billion, one hundred thirteen million, one hundred twenty thousand, two hundred twenty".