656232122 has 16 divisors (see below), whose sum is σ = 1211505792. Its totient is φ = 259608240.

The previous prime is 656232121. The next prime is 656232131. The reversal of 656232122 is 221232656.

It is not an unprimeable number, because it can be changed into a prime (656232121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1802654 + ... + 1803017.

It is an arithmetic number, because the mean of its divisors is an integer number (75719112).

Almost surely, 2^656232122 is an apocalyptic number.

656232122 is a deficient number, since it is larger than the sum of its proper divisors (555273670).

656232122 is a wasteful number, since it uses less digits than its factorization.

656232122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3605693.

The product of its digits is 8640, while the sum is 29.

The square root of 656232122 is about 25617.0279696923. The cubic root of 656232122 is about 868.9987697970.

Adding to 656232122 its reverse (221232656), we get a palindrome (877464778).

The spelling of 656232122 in words is "six hundred fifty-six million, two hundred thirty-two thousand, one hundred twenty-two".