12227656938 has 16 divisors (see below), whose sum is σ = 27948930240. Its totient is φ = 3493616256.

The previous prime is 12227656933. The next prime is 12227657033. The reversal of 12227656938 is 83965672221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12227656933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145567303 + ... + 145567386.

It is an arithmetic number, because the mean of its divisors is an integer number (1746808140).

Almost surely, 2^12227656938 is an apocalyptic number.

12227656938 is an abundant number, since it is smaller than the sum of its proper divisors (15721273302).

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

12227656938 is a wasteful number, since it uses less digits than its factorization.

12227656938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291134701.

The product of its digits is 2177280, while the sum is 51.

The spelling of 12227656938 in words is "twelve billion, two hundred twenty-seven million, six hundred fifty-six thousand, nine hundred thirty-eight".