12745610121 has 8 divisors (see below), whose sum is σ = 16999821664. Its totient is φ = 8494236000.

The previous prime is 12745610117. The next prime is 12745610179. The reversal of 12745610121 is 12101654721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12745610121 - 2² = 12745610117 is a prime.

It is a super-3 number, since 3×12745610121³ (a number of 31 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12745615121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 698851 + ... + 716856.

It is an arithmetic number, because the mean of its divisors is an integer number (2124977708).

Almost surely, 2^12745610121 is an apocalyptic number.

It is an amenable number.

12745610121 is a deficient number, since it is larger than the sum of its proper divisors (4254211543).

12745610121 is a wasteful number, since it uses less digits than its factorization.

12745610121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418711.

The product of its (nonzero) digits is 3360, while the sum is 30.

The spelling of 12745610121 in words is "twelve billion, seven hundred forty-five million, six hundred ten thousand, one hundred twenty-one".