12020020121211 has 8 divisors (see below), whose sum is σ = 16037515035984. Its totient is φ = 8007935976960.

The previous prime is 12020020121203. The next prime is 12020020121237. The reversal of 12020020121211 is 11212102002021.

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

It is not a de Polignac number, because 12020020121211 - 2³ = 12020020121203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12020020191211) 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, 1352687446 + ... + 1352696331.

It is an arithmetic number, because the mean of its divisors is an integer number (2004689379498).

Almost surely, 2^{12020020121211} is an apocalyptic number.

12020020121211 is a deficient number, since it is larger than the sum of its proper divisors (4017494914773).

12020020121211 is a wasteful number, since it uses less digits than its factorization.

12020020121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705385261.

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

Adding to 12020020121211 its reverse (11212102002021), we get a palindrome (23232122123232).

The spelling of 12020020121211 in words is "twelve trillion, twenty billion, twenty million, one hundred twenty-one thousand, two hundred eleven".