12221710 has 8 divisors (see below), whose sum is σ = 21999096. Its totient is φ = 4888680.

The previous prime is 12221689. The next prime is 12221749. The reversal of 12221710 is 1712221.

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

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, 611076 + ... + 611095.

It is an arithmetic number, because the mean of its divisors is an integer number (2749887).

Almost surely, 2^12221710 is an apocalyptic number.

12221710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221710 is a deficient number, since it is larger than the sum of its proper divisors (9777386).

12221710 is a wasteful number, since it uses less digits than its factorization.

12221710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222178.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 12221710 is about 3495.9562354240. The cubic root of 12221710 is about 230.3442230715.

Adding to 12221710 its reverse (1712221), we get a palindrome (13933931).

The spelling of 12221710 in words is "twelve million, two hundred twenty-one thousand, seven hundred ten".