12971222 has 8 divisors (see below), whose sum is σ = 21225672. Its totient is φ = 5896000.

The previous prime is 12971219. The next prime is 12971249. The reversal of 12971222 is 22217921.

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

It is a junction number, because it is equal to n+sod(n) for n = 12971191 and 12971200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294779 + ... + 294822.

It is an arithmetic number, because the mean of its divisors is an integer number (2653209).

Almost surely, 2^12971222 is an apocalyptic number.

12971222 is a deficient number, since it is larger than the sum of its proper divisors (8254450).

12971222 is a wasteful number, since it uses less digits than its factorization.

12971222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589614.

The product of its digits is 1008, while the sum is 26.

The square root of 12971222 is about 3601.5582738587. The cubic root of 12971222 is about 234.9598362022.

The spelling of 12971222 in words is "twelve million, nine hundred seventy-one thousand, two hundred twenty-two".