12241421312121 has 8 divisors (see below), whose sum is σ = 18135438980960. Its totient is φ = 8160947541396.

The previous prime is 12241421312117. The next prime is 12241421312147. The reversal of 12241421312121 is 12121312414221.

12241421312121 is a `hidden beast` number, since 1 + 2 + 2 + 414 + 2 + 1 + 31 + 212 + 1 = 666.

It is not a de Polignac number, because 12241421312121 - 2² = 12241421312117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 453385974523 = 12241421312121 / (1 + 2 + 2 + 4 + 1 + 4 + 2 + 1 + 3 + 1 + 2 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12241421312101) 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, 226692987235 + ... + 226692987288.

It is an arithmetic number, because the mean of its divisors is an integer number (2266929872620).

Almost surely, 2^{12241421312121} is an apocalyptic number.

It is an amenable number.

12241421312121 is a deficient number, since it is larger than the sum of its proper divisors (5894017668839).

12241421312121 is an equidigital number, since it uses as much as digits as its factorization.

12241421312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453385974532 (or 453385974526 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

Adding to 12241421312121 its reverse (12121312414221), we get a palindrome (24362733726342).

The spelling of 12241421312121 in words is "twelve trillion, two hundred forty-one billion, four hundred twenty-one million, three hundred twelve thousand, one hundred twenty-one".