13220022230440 has 64 divisors (see below), whose sum is σ = 30549668088960. Its totient is φ = 5144972209920.

The previous prime is 13220022230431. The next prime is 13220022230453. The reversal of 13220022230440 is 4403222002231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94074069 + ... + 94214491.

It is an arithmetic number, because the mean of its divisors is an integer number (477338563890).

Almost surely, 2^{13220022230440} is an apocalyptic number.

13220022230440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13220022230440 is an abundant number, since it is smaller than the sum of its proper divisors (17329645858520).

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

13220022230440 is a wasteful number, since it uses less digits than its factorization.

13220022230440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204082 (or 204078 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 13220022230440 its reverse (4403222002231), we get a palindrome (17623244232671).

The spelling of 13220022230440 in words is "thirteen trillion, two hundred twenty billion, twenty-two million, two hundred thirty thousand, four hundred forty".