12021221102109 has 16 divisors (see below), whose sum is σ = 16369612883712. Its totient is φ = 7843494413888.

The previous prime is 12021221102083. The next prime is 12021221102113. The reversal of 12021221102109 is 90120112212021.

It is a cyclic number.

It is not a de Polignac number, because 12021221102109 - 2⁸ = 12021221101853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021221102119) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7537147 + ... + 8991719.

It is an arithmetic number, because the mean of its divisors is an integer number (1023100805232).

Almost surely, 2^{12021221102109} is an apocalyptic number.

It is an amenable number.

12021221102109 is a deficient number, since it is larger than the sum of its proper divisors (4348391781603).

12021221102109 is a wasteful number, since it uses less digits than its factorization.

12021221102109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513236.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 12021221102109 in words is "twelve trillion, twenty-one billion, two hundred twenty-one million, one hundred two thousand, one hundred nine".