12102311221021 has 16 divisors (see below), whose sum is σ = 13873492686976. Its totient is φ = 10341705217536.

The previous prime is 12102311221019. The next prime is 12102311221079. The reversal of 12102311221021 is 12012211320121.

12102311221021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12102311221021 - 2¹ = 12102311221019 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 12102311221021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102311221621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26898310 + ... + 27344536.

It is an arithmetic number, because the mean of its divisors is an integer number (867093292936).

Almost surely, 2^{12102311221021} is an apocalyptic number.

It is an amenable number.

12102311221021 is a deficient number, since it is larger than the sum of its proper divisors (1771181465955).

12102311221021 is a wasteful number, since it uses less digits than its factorization.

12102311221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458068.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12102311221021 its reverse (12012211320121), we get a palindrome (24114522541142).

The spelling of 12102311221021 in words is "twelve trillion, one hundred two billion, three hundred eleven million, two hundred twenty-one thousand, twenty-one".