13621105234121 has 32 divisors (see below), whose sum is σ = 17433931124736. Its totient is φ = 10332607824000.

The previous prime is 13621105234109. The next prime is 13621105234129. The reversal of 13621105234121 is 12143250112631.

It is not a de Polignac number, because 13621105234121 - 2¹⁴ = 13621105217737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13621105234129) 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 31 ways as a sum of consecutive naturals, for example, 3197675 + ... + 6121056.

It is an arithmetic number, because the mean of its divisors is an integer number (544810347648).

Almost surely, 2^{13621105234121} is an apocalyptic number.

13621105234121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13621105234121 is a deficient number, since it is larger than the sum of its proper divisors (3812825890615).

13621105234121 is a wasteful number, since it uses less digits than its factorization.

13621105234121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9319253.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 13621105234121 its reverse (12143250112631), we get a palindrome (25764355346752).

The spelling of 13621105234121 in words is "thirteen trillion, six hundred twenty-one billion, one hundred five million, two hundred thirty-four thousand, one hundred twenty-one".