1000244413220 has 96 divisors (see below), whose sum is σ = 2407567585248. Its totient is φ = 345794936832.

The previous prime is 1000244413187. The next prime is 1000244413261. The reversal of 1000244413220 is 223144420001.

It can be written as a sum of positive squares in 16 ways, for example, as 416951735524 + 583292677696 = 645718^2 + 763736^2 .

It is a super-2 number, since 2×1000244413220² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266792 + ... + 1439328.

It is an arithmetic number, because the mean of its divisors is an integer number (25078829013).

Almost surely, 2^{1000244413220} is an apocalyptic number.

1000244413220 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 1000244413220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1203783792624).

1000244413220 is an abundant number, since it is smaller than the sum of its proper divisors (1407323172028).

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

1000244413220 is a wasteful number, since it uses less digits than its factorization.

1000244413220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172769 (or 1172767 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 1000244413220 its reverse (223144420001), we get a palindrome (1223388833221).

The spelling of 1000244413220 in words is "one trillion, two hundred forty-four million, four hundred thirteen thousand, two hundred twenty".