1001102011220 has 12 divisors (see below), whose sum is σ = 2102314223604. Its totient is φ = 400440804480.

The previous prime is 1001102011163. The next prime is 1001102011243. The reversal of 1001102011220 is 221102011001.

It can be written as a sum of positive squares in 2 ways, for example, as 662263929616 + 338838081604 = 813796^2 + 582098^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25027550261 + ... + 25027550300.

It is an arithmetic number, because the mean of its divisors is an integer number (175192851967).

Almost surely, 2^{1001102011220} is an apocalyptic number.

1001102011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001102011220 is an abundant number, since it is smaller than the sum of its proper divisors (1101212212384).

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

1001102011220 is a wasteful number, since it uses less digits than its factorization.

1001102011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50055100570 (or 50055100568 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1001102011220 its reverse (221102011001), we get a palindrome (1222204022221).

The spelling of 1001102011220 in words is "one trillion, one billion, one hundred two million, eleven thousand, two hundred twenty".