12011211213 has 16 divisors (see below), whose sum is σ = 16570008000. Its totient is φ = 7730038400.

The previous prime is 12011211187. The next prime is 12011211221. The reversal of 12011211213 is 31211211021.

It is a cyclic number.

It is not a de Polignac number, because 12011211213 - 2¹³ = 12011203021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12011211192 and 12011211201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011211013) 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 15 ways as a sum of consecutive naturals, for example, 1011913 + ... + 1023713.

It is an arithmetic number, because the mean of its divisors is an integer number (1035625500).

Almost surely, 2^12011211213 is an apocalyptic number.

It is an amenable number.

12011211213 is a deficient number, since it is larger than the sum of its proper divisors (4558796787).

12011211213 is a wasteful number, since it uses less digits than its factorization.

12011211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23532.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12011211213 its reverse (31211211021), we get a palindrome (43222422234).

The spelling of 12011211213 in words is "twelve billion, eleven million, two hundred eleven thousand, two hundred thirteen".