12222156938 has 8 divisors (see below), whose sum is σ = 18439208388. Its totient is φ = 6075754144.

The previous prime is 12222156893. The next prime is 12222156941. The reversal of 12222156938 is 83965122221.

12222156938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10310980849 + 1911176089 = 101543^2 + 43717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12222156938² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12222156895 and 12222156904.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17661731 + ... + 17662422.

Almost surely, 2^12222156938 is an apocalyptic number.

12222156938 is a deficient number, since it is larger than the sum of its proper divisors (6217051450).

12222156938 is a wasteful number, since it uses less digits than its factorization.

12222156938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35324328.

The product of its digits is 103680, while the sum is 41.

The spelling of 12222156938 in words is "twelve billion, two hundred twenty-two million, one hundred fifty-six thousand, nine hundred thirty-eight".