1001111221110 has 512 divisors, whose sum is σ = 3427503206400. Its totient is φ = 180383293440.

The previous prime is 1001111221063. The next prime is 1001111221163. The reversal of 1001111221110 is 111221111001.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 32206656 + ... + 32237724.

It is an arithmetic number, because the mean of its divisors is an integer number (6694342200).

Almost surely, 2^{1001111221110} is an apocalyptic number.

1001111221110 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 1001111221110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1713751603200).

1001111221110 is an abundant number, since it is smaller than the sum of its proper divisors (2426391985290).

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

1001111221110 is a wasteful number, since it uses less digits than its factorization.

1001111221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31176.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1001111221110 its reverse (111221111001), we get a palindrome (1112332332111).

It can be divided in two parts, 1001111 and 221110, that added together give a palindrome (1222221).

The spelling of 1001111221110 in words is "one trillion, one billion, one hundred eleven million, two hundred twenty-one thousand, one hundred ten".