13445540122021 has 8 divisors (see below), whose sum is σ = 15366364275200. Its totient is φ = 11524724145648.

The previous prime is 13445540121941. The next prime is 13445540122043. The reversal of 13445540122021 is 12022104554431.

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

It is not a de Polignac number, because 13445540122021 - 2¹⁵ = 13445540089253 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 (13445540122121) 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 7 ways as a sum of consecutive naturals, for example, 2017420 + ... + 5564266.

It is an arithmetic number, because the mean of its divisors is an integer number (1920795534400).

Almost surely, 2^{13445540122021} is an apocalyptic number.

It is an amenable number.

13445540122021 is a deficient number, since it is larger than the sum of its proper divisors (1920824153179).

13445540122021 is an equidigital number, since it uses as much as digits as its factorization.

13445540122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4088403.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 13445540122021 its reverse (12022104554431), we get a palindrome (25467644676452).

The spelling of 13445540122021 in words is "thirteen trillion, four hundred forty-five billion, five hundred forty million, one hundred twenty-two thousand, twenty-one".