11112221221010 has 96 divisors (see below), whose sum is σ = 24755446582272. Its totient is φ = 3516502429440.

The previous prime is 11112221221009. The next prime is 11112221221033. The reversal of 11112221221010 is 1012212221111.

11112221221010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11112221221010.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 145198655 + ... + 145275165.

It is an arithmetic number, because the mean of its divisors is an integer number (257869235232).

Almost surely, 2^{11112221221010} is an apocalyptic number.

11112221221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11112221221010 is an abundant number, since it is smaller than the sum of its proper divisors (13643225361262).

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

11112221221010 is a wasteful number, since it uses less digits than its factorization.

11112221221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88828 (or 88815 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11112221221010 its reverse (1012212221111), we get a palindrome (12124433442121).

It can be divided in two parts, 11112 and 221221010, that added together give a palindrome (221232122).

The spelling of 11112221221010 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, ten".