12256454111 has 4 divisors (see below), whose sum is σ = 13370677224. Its totient is φ = 11142231000.

The previous prime is 12256454083. The next prime is 12256454141. The reversal of 12256454111 is 11145465221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11145465221 = 11 ⋅1013224111.

It is a cyclic number.

It is not a de Polignac number, because 12256454111 - 2⁶ = 12256454047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256454141) 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, 557111540 + ... + 557111561.

It is an arithmetic number, because the mean of its divisors is an integer number (3342669306).

Almost surely, 2^12256454111 is an apocalyptic number.

12256454111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12256454111 is a deficient number, since it is larger than the sum of its proper divisors (1114223113).

12256454111 is a wasteful number, since it uses less digits than its factorization.

12256454111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114223112.

The product of its digits is 9600, while the sum is 32.

The spelling of 12256454111 in words is "twelve billion, two hundred fifty-six million, four hundred fifty-four thousand, one hundred eleven".