13154402521021 has 8 divisors (see below), whose sum is σ = 13181408352864. Its totient is φ = 13127397563280.

The previous prime is 13154402521009. The next prime is 13154402521049. The reversal of 13154402521021 is 12012520445131.

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 13154402521021 - 2⁷ = 13154402520893 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 (13154402521721) 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, 36087351 + ... + 36450043.

It is an arithmetic number, because the mean of its divisors is an integer number (1647676044108).

Almost surely, 2^{13154402521021} is an apocalyptic number.

It is an amenable number.

13154402521021 is a deficient number, since it is larger than the sum of its proper divisors (27005831843).

13154402521021 is an equidigital number, since it uses as much as digits as its factorization.

13154402521021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437051.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 13154402521021 its reverse (12012520445131), we get a palindrome (25166922966152).

The spelling of 13154402521021 in words is "thirteen trillion, one hundred fifty-four billion, four hundred two million, five hundred twenty-one thousand, twenty-one".