1001221111110 has 128 divisors (see below), whose sum is σ = 2703990988800. Its totient is φ = 235128337920.

The previous prime is 1001221111103. The next prime is 1001221111123. The reversal of 1001221111110 is 111111221001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2617051 + ... + 2975129.

It is an arithmetic number, because the mean of its divisors is an integer number (21124929600).

Almost surely, 2^{1001221111110} is an apocalyptic number.

1001221111110 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 1001221111110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1351995494400).

1001221111110 is an abundant number, since it is smaller than the sum of its proper divisors (1702769877690).

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

1001221111110 is a wasteful number, since it uses less digits than its factorization.

1001221111110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358366.

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

Adding to 1001221111110 its reverse (111111221001), we get a palindrome (1112332332111).

The spelling of 1001221111110 in words is "one trillion, one billion, two hundred twenty-one million, one hundred eleven thousand, one hundred ten".