12246464221 has 8 divisors (see below), whose sum is σ = 12430516824. Its totient is φ = 12063643200.

The previous prime is 12246464213. The next prime is 12246464227.

12246464221 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 11488838596 + 757625625 = 107186^2 + 27525^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12246464221 - 2³ = 12246464213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12246464227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287850 + ... + 327643.

It is an arithmetic number, because the mean of its divisors is an integer number (1553814603).

Almost surely, 2^12246464221 is an apocalyptic number.

It is an amenable number.

12246464221 is a deficient number, since it is larger than the sum of its proper divisors (184052603).

12246464221 is a wasteful number, since it uses less digits than its factorization.

12246464221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615791.

The product of its digits is 36864, while the sum is 34.

The spelling of 12246464221 in words is "twelve billion, two hundred forty-six million, four hundred sixty-four thousand, two hundred twenty-one".