12120101121001 has 4 divisors (see below), whose sum is σ = 12120430213332. Its totient is φ = 12119772028672.

The previous prime is 12120101120989. The next prime is 12120101121131. The reversal of 12120101121001 is 10012110102121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 233989875625 + 11886111245376 = 483725^2 + 3447624^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120101121001 - 2¹⁹ = 12120100596713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120191121001) 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, 164490916 + ... + 164564581.

It is an arithmetic number, because the mean of its divisors is an integer number (3030107553333).

Almost surely, 2^{12120101121001} is an apocalyptic number.

It is an amenable number.

12120101121001 is a deficient number, since it is larger than the sum of its proper divisors (329092331).

12120101121001 is an equidigital number, since it uses as much as digits as its factorization.

12120101121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329092330.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12120101121001 its reverse (10012110102121), we get a palindrome (22132211223122).

The spelling of 12120101121001 in words is "twelve trillion, one hundred twenty billion, one hundred one million, one hundred twenty-one thousand, one".