12002121021111 has 16 divisors (see below), whose sum is σ = 17280773443584. Its totient is φ = 7365795495264.

The previous prime is 12002121021101. The next prime is 12002121021119. The reversal of 12002121021111 is 11112012120021.

It is a happy number.

It is not a de Polignac number, because 12002121021111 - 2²⁵ = 12002087466679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002121021119) 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, 419259111 + ... + 419287736.

It is an arithmetic number, because the mean of its divisors is an integer number (1080048340224).

Almost surely, 2^{12002121021111} is an apocalyptic number.

12002121021111 is a deficient number, since it is larger than the sum of its proper divisors (5278652422473).

12002121021111 is a wasteful number, since it uses less digits than its factorization.

12002121021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838547230.

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

Adding to 12002121021111 its reverse (11112012120021), we get a palindrome (23114133141132).

The spelling of 12002121021111 in words is "twelve trillion, two billion, one hundred twenty-one million, twenty-one thousand, one hundred eleven".