12013311213 has 12 divisors (see below), whose sum is σ = 17354193948. Its totient is φ = 8008120320.

The previous prime is 12013311151. The next prime is 12013311221. The reversal of 12013311213 is 31211331021.

12013311213 is a `hidden beast` number, since 120 + 1 + 331 + 1 + 213 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1122719049 + 10890592164 = 33507^2 + 104358^2 .

It is not a de Polignac number, because 12013311213 - 2²⁵ = 11979756781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013311223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48493 + ... + 162413.

It is an arithmetic number, because the mean of its divisors is an integer number (1446182829).

Almost surely, 2^12013311213 is an apocalyptic number.

It is an amenable number.

12013311213 is a deficient number, since it is larger than the sum of its proper divisors (5340882735).

12013311213 is a wasteful number, since it uses less digits than its factorization.

12013311213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125644 (or 125641 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 12013311213 its reverse (31211331021), we get a palindrome (43224642234).

The spelling of 12013311213 in words is "twelve billion, thirteen million, three hundred eleven thousand, two hundred thirteen".