12221221121102 has 16 divisors (see below), whose sum is σ = 20950891315200. Its totient is φ = 5237609560728.

The previous prime is 12221221121047. The next prime is 12221221121129. The reversal of 12221221121102 is 20112112212221.

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 7 ways as a sum of consecutive naturals, for example, 3365102 + ... + 5980497.

It is an arithmetic number, because the mean of its divisors is an integer number (1309430707200).

Almost surely, 2^{12221221121102} is an apocalyptic number.

12221221121102 is a deficient number, since it is larger than the sum of its proper divisors (8729670194098).

12221221121102 is an equidigital number, since it uses as much as digits as its factorization.

12221221121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9439015.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12221221121102 its reverse (20112112212221), we get a palindrome (32333333333323).

The spelling of 12221221121102 in words is "twelve trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred two".