12621162111 has 4 divisors (see below), whose sum is σ = 16828216152. Its totient is φ = 8414108072.

The previous prime is 12621162109. The next prime is 12621162133. The reversal of 12621162111 is 11126112621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12621162111 - 2¹ = 12621162109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12621162011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2103527016 + ... + 2103527021.

It is an arithmetic number, because the mean of its divisors is an integer number (4207054038).

Almost surely, 2^12621162111 is an apocalyptic number.

12621162111 is a deficient number, since it is larger than the sum of its proper divisors (4207054041).

12621162111 is an equidigital number, since it uses as much as digits as its factorization.

12621162111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207054040.

The product of its digits is 288, while the sum is 24.

Adding to 12621162111 its reverse (11126112621), we get a palindrome (23747274732).

The spelling of 12621162111 in words is "twelve billion, six hundred twenty-one million, one hundred sixty-two thousand, one hundred eleven".