12305121120534 has 32 divisors (see below), whose sum is σ = 26947341999360. Its totient is φ = 3714962775200.

The previous prime is 12305121120511. The next prime is 12305121120613. The reversal of 12305121120534 is 43502112150321.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346527282 + ... + 346562789.

It is an arithmetic number, because the mean of its divisors is an integer number (842104437480).

Almost surely, 2^{12305121120534} is an apocalyptic number.

12305121120534 is an abundant number, since it is smaller than the sum of its proper divisors (14642220878826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12305121120534 is a wasteful number, since it uses less digits than its factorization.

12305121120534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693090356.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 12305121120534 its reverse (43502112150321), we get a palindrome (55807233270855).

The spelling of 12305121120534 in words is "twelve trillion, three hundred five billion, one hundred twenty-one million, one hundred twenty thousand, five hundred thirty-four".