12120628426 has 4 divisors (see below), whose sum is σ = 18180942642. Its totient is φ = 6060314212.

The previous prime is 12120628393. The next prime is 12120628427. The reversal of 12120628426 is 62482602121.

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., 6958062225 + 5162566201 = 83415^2 + 71851^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12120628391 and 12120628400.

It is not an unprimeable number, because it can be changed into a prime (12120628427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030157105 + ... + 3030157108.

Almost surely, 2^12120628426 is an apocalyptic number.

12120628426 is a deficient number, since it is larger than the sum of its proper divisors (6060314216).

12120628426 is an equidigital number, since it uses as much as digits as its factorization.

12120628426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060314215.

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 12120628426 in words is "twelve billion, one hundred twenty million, six hundred twenty-eight thousand, four hundred twenty-six".