12216464611027 has 4 divisors (see below), whose sum is σ = 12859436432680. Its totient is φ = 11573492789376.

The previous prime is 12216464610983. The next prime is 12216464611051. The reversal of 12216464611027 is 72011646461221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12216464611027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12216464611727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321485910798 + ... + 321485910835.

It is an arithmetic number, because the mean of its divisors is an integer number (3214859108170).

Almost surely, 2^{12216464611027} is an apocalyptic number.

12216464611027 is a deficient number, since it is larger than the sum of its proper divisors (642971821653).

12216464611027 is an equidigital number, since it uses as much as digits as its factorization.

12216464611027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642971821652.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 12216464611027 in words is "twelve trillion, two hundred sixteen billion, four hundred sixty-four million, six hundred eleven thousand, twenty-seven".