12251322466 has 4 divisors (see below), whose sum is σ = 18376983702. Its totient is φ = 6125661232.

The previous prime is 12251322403. The next prime is 12251322469. The reversal of 12251322466 is 66422315221.

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., 9076563441 + 3174759025 = 95271^2 + 56345^2 .

It is not an unprimeable number, because it can be changed into a prime (12251322469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3062830615 + ... + 3062830618.

Almost surely, 2^12251322466 is an apocalyptic number.

12251322466 is a deficient number, since it is larger than the sum of its proper divisors (6125661236).

12251322466 is an equidigital number, since it uses as much as digits as its factorization.

12251322466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6125661235.

The product of its digits is 34560, while the sum is 34.

Adding to 12251322466 its reverse (66422315221), we get a palindrome (78673637687).

The spelling of 12251322466 in words is "twelve billion, two hundred fifty-one million, three hundred twenty-two thousand, four hundred sixty-six".