12221220122110 has 16 divisors (see below), whose sum is σ = 23155996021200. Its totient is φ = 4631199204096.

The previous prime is 12221220122081. The next prime is 12221220122113. The reversal of 12221220122110 is 1122102212221.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221220122113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32161105395 + ... + 32161105774.

It is an arithmetic number, because the mean of its divisors is an integer number (1447249751325).

Almost surely, 2^{12221220122110} is an apocalyptic number.

12221220122110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221220122110 is a deficient number, since it is larger than the sum of its proper divisors (10934775899090).

12221220122110 is a wasteful number, since it uses less digits than its factorization.

12221220122110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64322211195.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12221220122110 its reverse (1122102212221), we get a palindrome (13343322334331).

The spelling of 12221220122110 in words is "twelve trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twenty-two thousand, one hundred ten".