12221121110 has 32 divisors (see below), whose sum is σ = 24003356832. Its totient is φ = 4443022080.

The previous prime is 12221121079. The next prime is 12221121161. The reversal of 12221121110 is 1112112221.

12221121110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 601274 + ... + 621266.

It is an arithmetic number, because the mean of its divisors is an integer number (750104901).

Almost surely, 2^12221121110 is an apocalyptic number.

12221121110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221121110 is a deficient number, since it is larger than the sum of its proper divisors (11782235722).

12221121110 is a wasteful number, since it uses less digits than its factorization.

12221121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25568.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12221121110 its reverse (1112112221), we get a palindrome (13333233331).

It can be divided in two parts, 12221 and 121110, that added together give a palindrome (133331).

The spelling of 12221121110 in words is "twelve billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred ten".