12216032213 has 64 divisors (see below), whose sum is σ = 16003104768. Its totient is φ = 9051894720.

The previous prime is 12216032209. The next prime is 12216032263. The reversal of 12216032213 is 31223061221.

It is not a de Polignac number, because 12216032213 - 2² = 12216032209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12216032263) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20124956 + ... + 20125562.

It is an arithmetic number, because the mean of its divisors is an integer number (250048512).

Almost surely, 2^12216032213 is an apocalyptic number.

It is an amenable number.

12216032213 is a deficient number, since it is larger than the sum of its proper divisors (3787072555).

12216032213 is a wasteful number, since it uses less digits than its factorization.

12216032213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12216032213 its reverse (31223061221), we get a palindrome (43439093434).

The spelling of 12216032213 in words is "twelve billion, two hundred sixteen million, thirty-two thousand, two hundred thirteen".