13220010006556 has 12 divisors (see below), whose sum is σ = 23460862829040. Its totient is φ = 6516906341120.

The previous prime is 13220010006527. The next prime is 13220010006559. The reversal of 13220010006556 is 65560001002231.

It is a super-2 number, since 2×13220010006556² (a number of 27 digits) contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220010006559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23274665221 + ... + 23274665788.

It is an arithmetic number, because the mean of its divisors is an integer number (1955071902420).

Almost surely, 2^{13220010006556} is an apocalyptic number.

It is an amenable number.

13220010006556 is a deficient number, since it is larger than the sum of its proper divisors (10240852822484).

13220010006556 is a wasteful number, since it uses less digits than its factorization.

13220010006556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46549331084 (or 46549331082 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 13220010006556 its reverse (65560001002231), we get a palindrome (78780011008787).

The spelling of 13220010006556 in words is "thirteen trillion, two hundred twenty billion, ten million, six thousand, five hundred fifty-six".