12020011211 has 16 divisors (see below), whose sum is σ = 14427453600. Its totient is φ = 9893104128.

The previous prime is 12020011189. The next prime is 12020011231. The reversal of 12020011211 is 11211002021.

12020011211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12020011211 - 2¹⁰ = 12020010187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020011192 and 12020011201.

It is not an unprimeable number, because it can be changed into a prime (12020011231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1427096 + ... + 1435493.

It is an arithmetic number, because the mean of its divisors is an integer number (901715850).

Almost surely, 2^12020011211 is an apocalyptic number.

12020011211 is a deficient number, since it is larger than the sum of its proper divisors (2407442389).

12020011211 is a wasteful number, since it uses less digits than its factorization.

12020011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862638.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12020011211 its reverse (11211002021), we get a palindrome (23231013232).

The spelling of 12020011211 in words is "twelve billion, twenty million, eleven thousand, two hundred eleven".