12213210648 has 32 divisors (see below), whose sum is σ = 31033571760. Its totient is φ = 4004330880.

The previous prime is 12213210643. The next prime is 12213210671. The reversal of 12213210648 is 84601231221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213210643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4169715 + ... + 4172642.

Almost surely, 2^12213210648 is an apocalyptic number.

It is an amenable number.

12213210648 is an abundant number, since it is smaller than the sum of its proper divisors (18820361112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12213210648 is a wasteful number, since it uses less digits than its factorization.

12213210648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8342427 (or 8342423 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

Adding to 12213210648 its reverse (84601231221), we get a palindrome (96814441869).

The spelling of 12213210648 in words is "twelve billion, two hundred thirteen million, two hundred ten thousand, six hundred forty-eight".