12956122 has 4 divisors (see below), whose sum is σ = 19434186. Its totient is φ = 6478060.

The previous prime is 12956117. The next prime is 12956131. The reversal of 12956122 is 22165921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8708401 + 4247721 = 2951^2 + 2061^2 .

It is a super-2 number, since 2×12956122² = 335722194557768, which contains 22 as substring.

It is an unprimeable number.

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, 3239029 + ... + 3239032.

Almost surely, 2^12956122 is an apocalyptic number.

12956122 is a deficient number, since it is larger than the sum of its proper divisors (6478064).

12956122 is an equidigital number, since it uses as much as digits as its factorization.

12956122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6478063.

The product of its digits is 2160, while the sum is 28.

The square root of 12956122 is about 3599.4613485909. The cubic root of 12956122 is about 234.8686273417.

The spelling of 12956122 in words is "twelve million, nine hundred fifty-six thousand, one hundred twenty-two".