12701521 has 8 divisors (see below), whose sum is σ = 14537600. Its totient is φ = 10870848.

The previous prime is 12701509. The next prime is 12701527. The reversal of 12701521 is 12510721.

12701521 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12701521 - 2⁹ = 12701009 is a prime.

It is a super-2 number, since 2×12701521² = 322657271426882, which contains 22 as substring.

12701521 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (12701527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8380 + ... + 9778.

It is an arithmetic number, because the mean of its divisors is an integer number (1817200).

Almost surely, 2^12701521 is an apocalyptic number.

It is an amenable number.

12701521 is a deficient number, since it is larger than the sum of its proper divisors (1836079).

12701521 is a wasteful number, since it uses less digits than its factorization.

12701521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2703.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 12701521 is about 3563.9193312981. The cubic root of 12701521 is about 233.3199690758.

The spelling of 12701521 in words is "twelve million, seven hundred one thousand, five hundred twenty-one".