12020121021211 has 8 divisors (see below), whose sum is σ = 12032555261760. Its totient is φ = 12007690668168.

The previous prime is 12020121021173. The next prime is 12020121021229. The reversal of 12020121021211 is 11212012102021.

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 12020121021211 - 2¹⁷ = 12020120890139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12020121021241) 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, 5235780 + ... + 7173118.

It is an arithmetic number, because the mean of its divisors is an integer number (1504069407720).

Almost surely, 2^{12020121021211} is an apocalyptic number.

12020121021211 is a deficient number, since it is larger than the sum of its proper divisors (12434240549).

12020121021211 is a wasteful number, since it uses less digits than its factorization.

12020121021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943753.

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

Adding to 12020121021211 its reverse (11212012102021), we get a palindrome (23232133123232).

The spelling of 12020121021211 in words is "twelve trillion, twenty billion, one hundred twenty-one million, twenty-one thousand, two hundred eleven".