121424501253321 has 128 divisors (see below), whose sum is σ = 218998370304000. Its totient is φ = 64948609769472.

The previous prime is 121424501253317. The next prime is 121424501253409. The reversal of 121424501253321 is 123352105424121.

121424501253321 is a `hidden beast` number, since 1 + 2 + 1 + 42 + 4 + 50 + 12 + 533 + 21 = 666.

It is not a de Polignac number, because 121424501253321 - 2² = 121424501253317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121424501253421) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 211147345 + ... + 211721633.

It is an arithmetic number, because the mean of its divisors is an integer number (1710924768000).

Almost surely, 2^{121424501253321} is an apocalyptic number.

It is an amenable number.

121424501253321 is a deficient number, since it is larger than the sum of its proper divisors (97573869050679).

121424501253321 is a wasteful number, since it uses less digits than its factorization.

121424501253321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575028 (or 575022 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 121424501253321 its reverse (123352105424121), we get a palindrome (244776606677442).

The spelling of 121424501253321 in words is "one hundred twenty-one trillion, four hundred twenty-four billion, five hundred one million, two hundred fifty-three thousand, three hundred twenty-one".