123532112251 has 4 divisors (see below), whose sum is σ = 123589920712. Its totient is φ = 123474303792.

The previous prime is 123532112237. The next prime is 123532112311. The reversal of 123532112251 is 152211235321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152211235321 = 97 ⋅1569187993.

It is a cyclic number.

It is not a de Polignac number, because 123532112251 - 2¹¹ = 123532110203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123532119251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28901025 + ... + 28905298.

It is an arithmetic number, because the mean of its divisors is an integer number (30897480178).

Almost surely, 2^123532112251 is an apocalyptic number.

123532112251 is a deficient number, since it is larger than the sum of its proper divisors (57808461).

123532112251 is an equidigital number, since it uses as much as digits as its factorization.

123532112251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57808460.

The product of its digits is 3600, while the sum is 28.

Adding to 123532112251 its reverse (152211235321), we get a palindrome (275743347572).

The spelling of 123532112251 in words is "one hundred twenty-three billion, five hundred thirty-two million, one hundred twelve thousand, two hundred fifty-one".