121153500424 has 32 divisors (see below), whose sum is σ = 250799703840. Its totient is φ = 54406278400.

The previous prime is 121153500421. The next prime is 121153500443. The reversal of 121153500424 is 424005351121.

It is a junction number, because it is equal to n+sod(n) for n = 121153500392 and 121153500401.

It is not an unprimeable number, because it can be changed into a prime (121153500421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8286337 + ... + 8300944.

It is an arithmetic number, because the mean of its divisors is an integer number (7837490745).

Almost surely, 2^121153500424 is an apocalyptic number.

It is an amenable number.

121153500424 is an abundant number, since it is smaller than the sum of its proper divisors (129646203416).

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

121153500424 is a wasteful number, since it uses less digits than its factorization.

121153500424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16587381 (or 16587377 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 121153500424 its reverse (424005351121), we get a palindrome (545158851545).

The spelling of 121153500424 in words is "one hundred twenty-one billion, one hundred fifty-three million, five hundred thousand, four hundred twenty-four".