12010001221121 has 4 divisors (see below), whose sum is σ = 12010033137600. Its totient is φ = 12009969304644.

The previous prime is 12010001221103. The next prime is 12010001221157. The reversal of 12010001221121 is 12112210001021.

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 12010001221121 - 2¹⁰ = 12010001220097 is a prime.

It is a super-2 number, since 2×12010001221121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010001221096 and 12010001221105.

It is not an unprimeable number, because it can be changed into a prime (12010001220121) 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, 15386981 + ... + 16148658.

It is an arithmetic number, because the mean of its divisors is an integer number (3002508284400).

Almost surely, 2^{12010001221121} is an apocalyptic number.

It is an amenable number.

12010001221121 is a deficient number, since it is larger than the sum of its proper divisors (31916479).

12010001221121 is an equidigital number, since it uses as much as digits as its factorization.

12010001221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31916478.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12010001221121 its reverse (12112210001021), we get a palindrome (24122211222142).

The spelling of 12010001221121 in words is "twelve trillion, ten billion, one million, two hundred twenty-one thousand, one hundred twenty-one".