123120111232 has 16 divisors (see below), whose sum is σ = 245278346850. Its totient is φ = 61560055552.

The previous prime is 123120111227. The next prime is 123120111269. The reversal of 123120111232 is 232111021321.

It can be written as a sum of positive squares in only one way, i.e., 122125087296 + 995023936 = 349464^2 + 31544^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 480937807 + ... + 480938062.

Almost surely, 2^123120111232 is an apocalyptic number.

It is an amenable number.

123120111232 is a deficient number, since it is larger than the sum of its proper divisors (122158235618).

123120111232 is an frugal number, since it uses more digits than its factorization.

123120111232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961875883 (or 961875871 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123120111232 its reverse (232111021321), we get a palindrome (355231132553).

The spelling of 123120111232 in words is "one hundred twenty-three billion, one hundred twenty million, one hundred eleven thousand, two hundred thirty-two".