12001022120121 has 16 divisors (see below), whose sum is σ = 16058311041024. Its totient is φ = 7972208738064.

The previous prime is 12001022120081. The next prime is 12001022120261. The reversal of 12001022120121 is 12102122010021.

It is not a de Polignac number, because 12001022120121 - 2⁹ = 12001022119609 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12001022120121.

It is not an unprimeable number, because it can be changed into a prime (12001022120621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38258500 + ... + 38570906.

It is an arithmetic number, because the mean of its divisors is an integer number (1003644440064).

Almost surely, 2^{12001022120121} is an apocalyptic number.

It is an amenable number.

12001022120121 is a deficient number, since it is larger than the sum of its proper divisors (4057288920903).

12001022120121 is a wasteful number, since it uses less digits than its factorization.

12001022120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357940.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12001022120121 its reverse (12102122010021), we get a palindrome (24103144130142).

The spelling of 12001022120121 in words is "twelve trillion, one billion, twenty-two million, one hundred twenty thousand, one hundred twenty-one".