12020311211 has 8 divisors (see below), whose sum is σ = 12045490944. Its totient is φ = 11995157160.

The previous prime is 12020311189. The next prime is 12020311273. The reversal of 12020311211 is 11211302021.

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 12020311211 - 2¹⁰ = 12020310187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12020311291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1132250 + ... + 1142816.

It is an arithmetic number, because the mean of its divisors is an integer number (1505686368).

Almost surely, 2^12020311211 is an apocalyptic number.

12020311211 is a deficient number, since it is larger than the sum of its proper divisors (25179733).

12020311211 is a wasteful number, since it uses less digits than its factorization.

12020311211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12841.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12020311211 its reverse (11211302021), we get a palindrome (23231613232).

The spelling of 12020311211 in words is "twelve billion, twenty million, three hundred eleven thousand, two hundred eleven".