12045701041721 has 16 divisors (see below), whose sum is σ = 12940602933888. Its totient is φ = 11171667897600.

The previous prime is 12045701041697. The next prime is 12045701041723. The reversal of 12045701041721 is 12714010754021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12045701041721 - 2⁶ = 12045701041657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12045701041723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248315 + ... + 4914576.

It is an arithmetic number, because the mean of its divisors is an integer number (808787683368).

Almost surely, 2^{12045701041721} is an apocalyptic number.

It is an amenable number.

12045701041721 is a deficient number, since it is larger than the sum of its proper divisors (894901892167).

12045701041721 is a wasteful number, since it uses less digits than its factorization.

12045701041721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5164912.

The product of its (nonzero) digits is 15680, while the sum is 35.

Adding to 12045701041721 its reverse (12714010754021), we get a palindrome (24759711795742).

The spelling of 12045701041721 in words is "twelve trillion, forty-five billion, seven hundred one million, forty-one thousand, seven hundred twenty-one".