13001211111 has 48 divisors (see below), whose sum is σ = 21678312960. Its totient is φ = 6888430080.

The previous prime is 13001211103. The next prime is 13001211131. The reversal of 13001211111 is 11111210031.

It is not a de Polignac number, because 13001211111 - 2³ = 13001211103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001211101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81751 + ... + 180791.

It is an arithmetic number, because the mean of its divisors is an integer number (451631520).

Almost surely, 2^13001211111 is an apocalyptic number.

13001211111 is a deficient number, since it is larger than the sum of its proper divisors (8677101849).

13001211111 is a wasteful number, since it uses less digits than its factorization.

13001211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99124 (or 99117 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 13001211111 its reverse (11111210031), we get a palindrome (24112421142).

The spelling of 13001211111 in words is "thirteen billion, one million, two hundred eleven thousand, one hundred eleven".