13221551355040 has 96 divisors (see below), whose sum is σ = 35700021302400. Its totient is φ = 4532870605824.

The previous prime is 13221551354987. The next prime is 13221551355049. The reversal of 13221551355040 is 4055315512231.

It is not an unprimeable number, because it can be changed into a prime (13221551355049) by changing a digit.

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, 22273939 + ... + 22859821.

It is an arithmetic number, because the mean of its divisors is an integer number (371875221900).

Almost surely, 2^{13221551355040} is an apocalyptic number.

13221551355040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13221551355040 is an abundant number, since it is smaller than the sum of its proper divisors (22478469947360).

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

13221551355040 is a wasteful number, since it uses less digits than its factorization.

13221551355040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606054 (or 606046 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

Adding to 13221551355040 its reverse (4055315512231), we get a palindrome (17276866867271).

The spelling of 13221551355040 in words is "thirteen trillion, two hundred twenty-one billion, five hundred fifty-one million, three hundred fifty-five thousand, forty".