12121250421441 has 32 divisors (see below), whose sum is σ = 20187845664768. Its totient is φ = 6308701758720.

The previous prime is 12121250421403. The next prime is 12121250421487. The reversal of 12121250421441 is 14412405212121.

It is a happy number.

It is not a de Polignac number, because 12121250421441 - 2⁶ = 12121250421377 is a prime.

It is a super-2 number, since 2×12121250421441² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12121250421399 and 12121250421408.

It is not an unprimeable number, because it can be changed into a prime (12121250422441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 547619295 + ... + 547641428.

It is an arithmetic number, because the mean of its divisors is an integer number (630870177024).

Almost surely, 2^{12121250421441} is an apocalyptic number.

It is an amenable number.

12121250421441 is a deficient number, since it is larger than the sum of its proper divisors (8066595243327).

12121250421441 is a wasteful number, since it uses less digits than its factorization.

12121250421441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095260781.

The product of its (nonzero) digits is 5120, while the sum is 30.

Adding to 12121250421441 its reverse (14412405212121), we get a palindrome (26533655633562).

The spelling of 12121250421441 in words is "twelve trillion, one hundred twenty-one billion, two hundred fifty million, four hundred twenty-one thousand, four hundred forty-one".