12013011213123 has 32 divisors (see below), whose sum is σ = 17115929233920. Its totient is φ = 7468078072320.

The previous prime is 12013011213113. The next prime is 12013011213139. The reversal of 12013011213123 is 32131211031021.

It is not a de Polignac number, because 12013011213123 - 2¹² = 12013011209027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12013011213123.

It is not an unprimeable number, because it can be changed into a prime (12013011213103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175669128 + ... + 175737498.

It is an arithmetic number, because the mean of its divisors is an integer number (534872788560).

Almost surely, 2^{12013011213123} is an apocalyptic number.

12013011213123 is a deficient number, since it is larger than the sum of its proper divisors (5102918020797).

12013011213123 is a wasteful number, since it uses less digits than its factorization.

12013011213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100107.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 12013011213123 its reverse (32131211031021), we get a palindrome (44144222244144).

The spelling of 12013011213123 in words is "twelve trillion, thirteen billion, eleven million, two hundred thirteen thousand, one hundred twenty-three".