12001210221121 has 8 divisors (see below), whose sum is σ = 13092724461600. Its totient is φ = 10909778502240.

The previous prime is 12001210221067. The next prime is 12001210221137. The reversal of 12001210221121 is 12112201210021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12001210221121 - 2¹¹ = 12001210219073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001210221095 and 12001210221104.

It is not an unprimeable number, because it can be changed into a prime (12001210221821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20326116 + ... + 20908213.

It is an arithmetic number, because the mean of its divisors is an integer number (1636590557700).

Almost surely, 2^{12001210221121} is an apocalyptic number.

12001210221121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12001210221121 is a deficient number, since it is larger than the sum of its proper divisors (1091514240479).

12001210221121 is a wasteful number, since it uses less digits than its factorization.

12001210221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41260799.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12001210221121 its reverse (12112201210021), we get a palindrome (24113411431142).

The spelling of 12001210221121 in words is "twelve trillion, one billion, two hundred ten million, two hundred twenty-one thousand, one hundred twenty-one".