12010210211121 has 4 divisors (see below), whose sum is σ = 16013613614832. Its totient is φ = 8006806807412.

The previous prime is 12010210211117. The next prime is 12010210211173. The reversal of 12010210211121 is 12111201201021.

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 12010210211121 - 2² = 12010210211117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12010210211121.

It is not an unprimeable number, because it can be changed into a prime (12010210215121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2001701701851 + ... + 2001701701856.

It is an arithmetic number, because the mean of its divisors is an integer number (4003403403708).

Almost surely, 2^{12010210211121} is an apocalyptic number.

It is an amenable number.

12010210211121 is a deficient number, since it is larger than the sum of its proper divisors (4003403403711).

12010210211121 is an equidigital number, since it uses as much as digits as its factorization.

12010210211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003403403710.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12010210211121 its reverse (12111201201021), we get a palindrome (24121411412142).

The spelling of 12010210211121 in words is "twelve trillion, ten billion, two hundred ten million, two hundred eleven thousand, one hundred twenty-one".