13220245431224 has 64 divisors (see below), whose sum is σ = 27316821285600. Its totient is φ = 5959471988736.

The previous prime is 13220245431193. The next prime is 13220245431227. The reversal of 13220245431224 is 42213454202231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220245431227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116720732 + ... + 116833940.

Almost surely, 2^{13220245431224} is an apocalyptic number.

It is an amenable number.

13220245431224 is an abundant number, since it is smaller than the sum of its proper divisors (14096575854376).

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

13220245431224 is a wasteful number, since it uses less digits than its factorization.

13220245431224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139384 (or 139380 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 13220245431224 its reverse (42213454202231), we get a palindrome (55433699633455).

The spelling of 13220245431224 in words is "thirteen trillion, two hundred twenty billion, two hundred forty-five million, four hundred thirty-one thousand, two hundred twenty-four".