12197214481 has 3 divisors (see below), whose sum is σ = 12197324923. Its totient is φ = 12197104040.

The previous prime is 12197214473. The next prime is 12197214499. The reversal of 12197214481 is 18441279121.

The square root of 12197214481 is 110441.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2149156881 + 10048057600 = 46359^2 + 100240^2 .

It is not a de Polignac number, because 12197214481 - 2³ = 12197214473 is a prime.

It is a super-2 number, since 2×12197214481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12197214181) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 55221 + ... + 165661.

Almost surely, 2^12197214481 is an apocalyptic number.

12197214481 is the 110441-st square number.

12197214481 is the 55221-st centered octagonal number.

It is an amenable number.

12197214481 is a deficient number, since it is larger than the sum of its proper divisors (110442).

12197214481 is an frugal number, since it uses more digits than its factorization.

12197214481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220882 (or 110441 counting only the distinct ones).

The product of its digits is 32256, while the sum is 40.

The spelling of 12197214481 in words is "twelve billion, one hundred ninety-seven million, two hundred fourteen thousand, four hundred eighty-one".