12151211226 has 32 divisors (see below), whose sum is σ = 30299125248. Its totient is φ = 3156158640.

The previous prime is 12151211221. The next prime is 12151211231. The reversal of 12151211226 is 62211215121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12151211221) and next prime (12151211231).

It is a junction number, because it is equal to n+sod(n) for n = 12151211196 and 12151211205.

It is not an unprimeable number, because it can be changed into a prime (12151211221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13150200 + ... + 13151123.

It is an arithmetic number, because the mean of its divisors is an integer number (946847664).

Almost surely, 2^12151211226 is an apocalyptic number.

12151211226 is an abundant number, since it is smaller than the sum of its proper divisors (18147914022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12151211226 is a wasteful number, since it uses less digits than its factorization.

12151211226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26301346.

The product of its digits is 480, while the sum is 24.

Adding to 12151211226 its reverse (62211215121), we get a palindrome (74362426347).

The spelling of 12151211226 in words is "twelve billion, one hundred fifty-one million, two hundred eleven thousand, two hundred twenty-six".