121413663424 has 56 divisors (see below), whose sum is σ = 252546508368. Its totient is φ = 57848770560.

The previous prime is 121413663403. The next prime is 121413663439. The reversal of 121413663424 is 424366314121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425197 + ... + 650860.

It is an arithmetic number, because the mean of its divisors is an integer number (4509759078).

Almost surely, 2^121413663424 is an apocalyptic number.

It is an amenable number.

121413663424 is an abundant number, since it is smaller than the sum of its proper divisors (131132844944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121413663424 is a wasteful number, since it uses less digits than its factorization.

121413663424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076153 (or 1076143 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

Adding to 121413663424 its reverse (424366314121), we get a palindrome (545779977545).

The spelling of 121413663424 in words is "one hundred twenty-one billion, four hundred thirteen million, six hundred sixty-three thousand, four hundred twenty-four".