12124354534 has 4 divisors (see below), whose sum is σ = 18186531804. Its totient is φ = 6062177266.

The previous prime is 12124354531. The next prime is 12124354591. The reversal of 12124354534 is 43545342121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43545342121 = 17 ⋅2561490713.

It is a super-2 number, since 2×12124354534² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12124354534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12124354531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3031088632 + ... + 3031088635.

It is an arithmetic number, because the mean of its divisors is an integer number (4546632951).

Almost surely, 2^12124354534 is an apocalyptic number.

12124354534 is a deficient number, since it is larger than the sum of its proper divisors (6062177270).

12124354534 is an equidigital number, since it uses as much as digits as its factorization.

12124354534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6062177269.

The product of its digits is 57600, while the sum is 34.

Adding to 12124354534 its reverse (43545342121), we get a palindrome (55669696655).

The spelling of 12124354534 in words is "twelve billion, one hundred twenty-four million, three hundred fifty-four thousand, five hundred thirty-four".