12136223551 has 16 divisors (see below), whose sum is σ = 13171603104. Its totient is φ = 11137480704.

The previous prime is 12136223531. The next prime is 12136223587. The reversal of 12136223551 is 15532263121.

12136223551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12136223551 - 2¹³ = 12136215359 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 (12136223531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419485 + ... + 447481.

It is an arithmetic number, because the mean of its divisors is an integer number (823225194).

Almost surely, 2^12136223551 is an apocalyptic number.

12136223551 is a deficient number, since it is larger than the sum of its proper divisors (1035379553).

12136223551 is a wasteful number, since it uses less digits than its factorization.

12136223551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28650.

The product of its digits is 10800, while the sum is 31.

Adding to 12136223551 its reverse (15532263121), we get a palindrome (27668486672).

The spelling of 12136223551 in words is "twelve billion, one hundred thirty-six million, two hundred twenty-three thousand, five hundred fifty-one".