12012020121211 has 8 divisors (see below), whose sum is σ = 13107414184704. Its totient is φ = 10917191430120.

The previous prime is 12012020121203. The next prime is 12012020121229. The reversal of 12012020121211 is 11212102021021.

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 12012020121211 - 2³ = 12012020121203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012020125211) 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, 141298671 + ... + 141383656.

It is an arithmetic number, because the mean of its divisors is an integer number (1638426773088).

Almost surely, 2^{12012020121211} is an apocalyptic number.

12012020121211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12012020121211 is a deficient number, since it is larger than the sum of its proper divisors (1095394063493).

12012020121211 is a wasteful number, since it uses less digits than its factorization.

12012020121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282686201.

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

Adding to 12012020121211 its reverse (11212102021021), we get a palindrome (23224122142232).

The spelling of 12012020121211 in words is "twelve trillion, twelve billion, twenty million, one hundred twenty-one thousand, two hundred eleven".