12136822 has 4 divisors (see below), whose sum is σ = 18205236. Its totient is φ = 6068410.

The previous prime is 12136783. The next prime is 12136829. The reversal of 12136822 is 22863121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22863121 = 89 ⋅256889.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12136829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3034204 + ... + 3034207.

It is an arithmetic number, because the mean of its divisors is an integer number (4551309).

Almost surely, 2^12136822 is an apocalyptic number.

12136822 is a deficient number, since it is larger than the sum of its proper divisors (6068414).

12136822 is an equidigital number, since it uses as much as digits as its factorization.

12136822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6068413.

The product of its digits is 1152, while the sum is 25.

The square root of 12136822 is about 3483.7941959880. The cubic root of 12136822 is about 229.8096850362.

Adding to 12136822 its reverse (22863121), we get a palindrome (34999943).

It can be divided in two parts, 1213682 and 2, that multiplied together give a square (2427364 = 1558²).

The spelling of 12136822 in words is "twelve million, one hundred thirty-six thousand, eight hundred twenty-two".