12217452897 has 16 divisors (see below), whose sum is σ = 17565065280. Its totient is φ = 7508980032.

The previous prime is 12217452853. The next prime is 12217452899. The reversal of 12217452897 is 79825471221.

It is not a de Polignac number, because 12217452897 - 2⁷ = 12217452769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12217452899) 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, 165447 + ... + 227612.

It is an arithmetic number, because the mean of its divisors is an integer number (1097816580).

Almost surely, 2^12217452897 is an apocalyptic number.

It is an amenable number.

12217452897 is a deficient number, since it is larger than the sum of its proper divisors (5347612383).

12217452897 is a wasteful number, since it uses less digits than its factorization.

12217452897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393872.

The product of its digits is 564480, while the sum is 48.

The spelling of 12217452897 in words is "twelve billion, two hundred seventeen million, four hundred fifty-two thousand, eight hundred ninety-seven".