12250010661 has 8 divisors (see below), whose sum is σ = 18666682944. Its totient is φ = 7000006080.

The previous prime is 12250010659. The next prime is 12250010683. The reversal of 12250010661 is 16601005221.

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

It is not a de Polignac number, because 12250010661 - 2¹ = 12250010659 is a prime.

It is a super-2 number, since 2×12250010661² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12250010651) 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, 291666900 + ... + 291666941.

It is an arithmetic number, because the mean of its divisors is an integer number (2333335368).

Almost surely, 2^12250010661 is an apocalyptic number.

It is an amenable number.

12250010661 is a deficient number, since it is larger than the sum of its proper divisors (6416672283).

12250010661 is an equidigital number, since it uses as much as digits as its factorization.

12250010661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583333851.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 12250010661 its reverse (16601005221), we get a palindrome (28851015882).

The spelling of 12250010661 in words is "twelve billion, two hundred fifty million, ten thousand, six hundred sixty-one".