12213453452 has 24 divisors (see below), whose sum is σ = 21462246960. Its totient is φ = 6081419520.

The previous prime is 12213453389. The next prime is 12213453457. The reversal of 12213453452 is 25435431221.

It is not an unprimeable number, because it can be changed into a prime (12213453457) 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, 1618424 + ... + 1625952.

It is an arithmetic number, because the mean of its divisors is an integer number (894260290).

Almost surely, 2^12213453452 is an apocalyptic number.

It is an amenable number.

12213453452 is a deficient number, since it is larger than the sum of its proper divisors (9248793508).

12213453452 is a wasteful number, since it uses less digits than its factorization.

12213453452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9161 (or 9159 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

Adding to 12213453452 its reverse (25435431221), we get a palindrome (37648884673).

The spelling of 12213453452 in words is "twelve billion, two hundred thirteen million, four hundred fifty-three thousand, four hundred fifty-two".