13551121213 has 8 divisors (see below), whose sum is σ = 15572560640. Its totient is φ = 11551073040.

The previous prime is 13551121201. The next prime is 13551121231. The reversal of 13551121213 is 31212115531.

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 13551121213 - 2³³ = 4961186621 is a prime.

It is a super-3 number, since 3×13551121213³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13551121253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5346453 + ... + 5348986.

It is an arithmetic number, because the mean of its divisors is an integer number (1946570080).

Almost surely, 2^13551121213 is an apocalyptic number.

It is an amenable number.

13551121213 is a deficient number, since it is larger than the sum of its proper divisors (2021439427).

13551121213 is a wasteful number, since it uses less digits than its factorization.

13551121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10695627.

The product of its digits is 900, while the sum is 25.

Adding to 13551121213 its reverse (31212115531), we get a palindrome (44763236744).

The spelling of 13551121213 in words is "thirteen billion, five hundred fifty-one million, one hundred twenty-one thousand, two hundred thirteen".