12113863969 has 3 divisors (see below), whose sum is σ = 12113974033. Its totient is φ = 12113753906.

The previous prime is 12113863919. The next prime is 12113863999. The reversal of 12113863969 is 96936831121.

The square root of 12113863969 is 110063.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 12113863969 - 2¹⁵ = 12113831201 is a prime.

It is a super-2 number, since 2×12113863969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12113863919) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 55032 + ... + 165094.

Almost surely, 2^12113863969 is an apocalyptic number.

12113863969 is the 110063-rd square number.

12113863969 is the 55032-nd centered octagonal number.

It is an amenable number.

12113863969 is a deficient number, since it is larger than the sum of its proper divisors (110064).

12113863969 is an frugal number, since it uses more digits than its factorization.

12113863969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220126 (or 110063 counting only the distinct ones).

The product of its digits is 419904, while the sum is 49.

Multiplying 12113863969 by its sum of digits (49), we get a square (593579334481 = 770441²).

The spelling of 12113863969 in words is "twelve billion, one hundred thirteen million, eight hundred sixty-three thousand, nine hundred sixty-nine".