121514430550 has 12 divisors (see below), whose sum is σ = 226016840916. Its totient is φ = 48605772200.

The previous prime is 121514430523. The next prime is 121514430551. The reversal of 121514430550 is 55034415121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121514430551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1215144256 + ... + 1215144355.

It is an arithmetic number, because the mean of its divisors is an integer number (18834736743).

Almost surely, 2^121514430550 is an apocalyptic number.

121514430550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121514430550 is a deficient number, since it is larger than the sum of its proper divisors (104502410366).

121514430550 is a wasteful number, since it uses less digits than its factorization.

121514430550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430288623 (or 2430288618 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 121514430550 its reverse (55034415121), we get a palindrome (176548845671).

The spelling of 121514430550 in words is "one hundred twenty-one billion, five hundred fourteen million, four hundred thirty thousand, five hundred fifty".