12101221110109 has 4 divisors (see below), whose sum is σ = 12116142468640. Its totient is φ = 12086299751580.

The previous prime is 12101221110107. The next prime is 12101221110133. The reversal of 12101221110109 is 90101112210121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12101221110109 - 2¹ = 12101221110107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12101221110109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101221110107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7460678049 + ... + 7460679670.

It is an arithmetic number, because the mean of its divisors is an integer number (3029035617160).

Almost surely, 2^{12101221110109} is an apocalyptic number.

It is an amenable number.

12101221110109 is a deficient number, since it is larger than the sum of its proper divisors (14921358531).

12101221110109 is an equidigital number, since it uses as much as digits as its factorization.

12101221110109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14921358530.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 12101221110109 in words is "twelve trillion, one hundred one billion, two hundred twenty-one million, one hundred ten thousand, one hundred nine".