12001221221110 has 64 divisors (see below), whose sum is σ = 24183247636800. Its totient is φ = 4250155878400.

The previous prime is 12001221221081. The next prime is 12001221221111. The reversal of 12001221221110 is 1112212210021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001221221111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227856 + ... + 4904524.

It is an arithmetic number, because the mean of its divisors is an integer number (377863244325).

Almost surely, 2^{12001221221110} is an apocalyptic number.

12001221221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12001221221110 is an abundant number, since it is smaller than the sum of its proper divisors (12182026415690).

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

12001221221110 is a wasteful number, since it uses less digits than its factorization.

12001221221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677297.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12001221221110 its reverse (1112212210021), we get a palindrome (13113433431131).

The spelling of 12001221221110 in words is "twelve trillion, one billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred ten".