13556222031 has 8 divisors (see below), whose sum is σ = 19718141184. Its totient is φ = 8215892120.

The previous prime is 13556221963. The next prime is 13556222033. The reversal of 13556222031 is 13022265531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13556222031 - 2⁹ = 13556221519 is a prime.

It is a super-2 number, since 2×13556222031² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13556222031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13556222033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205397271 + ... + 205397336.

It is an arithmetic number, because the mean of its divisors is an integer number (2464767648).

Almost surely, 2^13556222031 is an apocalyptic number.

13556222031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13556222031 is a deficient number, since it is larger than the sum of its proper divisors (6161919153).

13556222031 is a wasteful number, since it uses less digits than its factorization.

13556222031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410794621.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 13556222031 its reverse (13022265531), we get a palindrome (26578487562).

The spelling of 13556222031 in words is "thirteen billion, five hundred fifty-six million, two hundred twenty-two thousand, thirty-one".