1001320220120 has 96 divisors (see below), whose sum is σ = 2476772166960. Its totient is φ = 364062547200.

The previous prime is 1001320220093. The next prime is 1001320220141. The reversal of 1001320220120 is 210220231001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1001320220095 and 1001320220104.

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, 48684959 + ... + 48705521.

Almost surely, 2^{1001320220120} is an apocalyptic number.

1001320220120 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 1001320220120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1238386083480).

1001320220120 is an abundant number, since it is smaller than the sum of its proper divisors (1475451946840).

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

1001320220120 is a wasteful number, since it uses less digits than its factorization.

1001320220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30657 (or 30642 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1001320220120 its reverse (210220231001), we get a palindrome (1211540451121).

The spelling of 1001320220120 in words is "one trillion, one billion, three hundred twenty million, two hundred twenty thousand, one hundred twenty".