123111231025 has 24 divisors (see below), whose sum is σ = 160712580800. Its totient is φ = 93293726400.

The previous prime is 123111231013. The next prime is 123111231031. The reversal of 123111231025 is 520132111321.

It is not a de Polignac number, because 123111231025 - 2¹⁹ = 123110706737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123111230987 and 123111231005.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7054060 + ... + 7071490.

Almost surely, 2^123111231025 is an apocalyptic number.

It is an amenable number.

123111231025 is a deficient number, since it is larger than the sum of its proper divisors (37601349775).

123111231025 is a wasteful number, since it uses less digits than its factorization.

123111231025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32329 (or 32324 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 123111231025 its reverse (520132111321), we get a palindrome (643243342346).

The spelling of 123111231025 in words is "one hundred twenty-three billion, one hundred eleven million, two hundred thirty-one thousand, twenty-five".