12126444535 has 4 divisors (see below), whose sum is σ = 14551733448. Its totient is φ = 9701155624.

The previous prime is 12126444529. The next prime is 12126444541. The reversal of 12126444535 is 53544462121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53544462121 = 1013 ⋅52857317.

It is an interprime number because it is at equal distance from previous prime (12126444529) and next prime (12126444541).

It is a cyclic number.

It is not a de Polignac number, because 12126444535 - 2³³ = 3536509943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12126444494 and 12126444503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1212644449 + ... + 1212644458.

It is an arithmetic number, because the mean of its divisors is an integer number (3637933362).

Almost surely, 2^12126444535 is an apocalyptic number.

12126444535 is a deficient number, since it is larger than the sum of its proper divisors (2425288913).

12126444535 is an equidigital number, since it uses as much as digits as its factorization.

12126444535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425288912.

The product of its digits is 115200, while the sum is 37.

The spelling of 12126444535 in words is "twelve billion, one hundred twenty-six million, four hundred forty-four thousand, five hundred thirty-five".