12102212211121 has 4 divisors (see below), whose sum is σ = 12105491058544. Its totient is φ = 12098933363700.

The previous prime is 12102212211059. The next prime is 12102212211157. The reversal of 12102212211121 is 12111221220121.

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 12102212211121 - 2⁷ = 12102212210993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12102212311121) 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, 1639418175 + ... + 1639425556.

It is an arithmetic number, because the mean of its divisors is an integer number (3026372764636).

Almost surely, 2^{12102212211121} is an apocalyptic number.

It is an amenable number.

12102212211121 is a deficient number, since it is larger than the sum of its proper divisors (3278847423).

12102212211121 is an equidigital number, since it uses as much as digits as its factorization.

12102212211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278847422.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12102212211121 its reverse (12111221220121), we get a palindrome (24213433431242).

The spelling of 12102212211121 in words is "twelve trillion, one hundred two billion, two hundred twelve million, two hundred eleven thousand, one hundred twenty-one".