13551152021 has 16 divisors (see below), whose sum is σ = 14937696000. Its totient is φ = 12190996800.

The previous prime is 13551152011. The next prime is 13551152063. The reversal of 13551152021 is 12025115531.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13551152021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13551152011) 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, 428915 + ... + 459423.

It is an arithmetic number, because the mean of its divisors is an integer number (933606000).

Almost surely, 2^13551152021 is an apocalyptic number.

13551152021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13551152021 is a deficient number, since it is larger than the sum of its proper divisors (1386543979).

13551152021 is a wasteful number, since it uses less digits than its factorization.

13551152021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30940.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 13551152021 its reverse (12025115531), we get a palindrome (25576267552).

The spelling of 13551152021 in words is "thirteen billion, five hundred fifty-one million, one hundred fifty-two thousand, twenty-one".