12912097 has 4 divisors (see below), whose sum is σ = 14085936. Its totient is φ = 11738260.

The previous prime is 12912073. The next prime is 12912101. The reversal of 12912097 is 79021921.

12912097 is nontrivially palindromic in base 7.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79021921 = 11 ⋅7183811.

It is a cyclic number.

It is not a de Polignac number, because 12912097 - 2¹¹ = 12910049 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12912017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586903 + ... + 586924.

It is an arithmetic number, because the mean of its divisors is an integer number (3521484).

Almost surely, 2^12912097 is an apocalyptic number.

It is an amenable number.

12912097 is a deficient number, since it is larger than the sum of its proper divisors (1173839).

12912097 is a wasteful number, since it uses less digits than its factorization.

12912097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173838.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 12912097 is about 3593.3406462511. The cubic root of 12912097 is about 234.6022969953.

The spelling of 12912097 in words is "twelve million, nine hundred twelve thousand, ninety-seven".