13552231021 has 8 divisors (see below), whose sum is σ = 15497590784. Its totient is φ = 11609202960.

The previous prime is 13552230997. The next prime is 13552231031. The reversal of 13552231021 is 12013225531.

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 13552231021 - 2¹¹ = 13552228973 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 (13552231031) 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, 570450 + ... + 593731.

It is an arithmetic number, because the mean of its divisors is an integer number (1937198848).

Almost surely, 2^13552231021 is an apocalyptic number.

It is an amenable number.

13552231021 is a deficient number, since it is larger than the sum of its proper divisors (1945359763).

13552231021 is a wasteful number, since it uses less digits than its factorization.

13552231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165851.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 13552231021 its reverse (12013225531), we get a palindrome (25565456552).

The spelling of 13552231021 in words is "thirteen billion, five hundred fifty-two million, two hundred thirty-one thousand, twenty-one".