12215643326 has 8 divisors (see below), whose sum is σ = 18331200264. Its totient is φ = 6105243240.

The previous prime is 12215643287. The next prime is 12215643331. The reversal of 12215643326 is 62334651221.

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, 1283285 + ... + 1292768.

It is an arithmetic number, because the mean of its divisors is an integer number (2291400033).

Almost surely, 2^12215643326 is an apocalyptic number.

12215643326 is a deficient number, since it is larger than the sum of its proper divisors (6115556938).

12215643326 is a wasteful number, since it uses less digits than its factorization.

12215643326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2578426.

The product of its digits is 51840, while the sum is 35.

The spelling of 12215643326 in words is "twelve billion, two hundred fifteen million, six hundred forty-three thousand, three hundred twenty-six".