121502553132 has 24 divisors (see below), whose sum is σ = 283517853696. Its totient is φ = 40499151568.

The previous prime is 121502553103. The next prime is 121502553149. The reversal of 121502553132 is 231355205121.

It is a self number, because there is not a number n which added to its sum of digits gives 121502553132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104353 + ... + 503879.

It is an arithmetic number, because the mean of its divisors is an integer number (11813243904).

Almost surely, 2^121502553132 is an apocalyptic number.

121502553132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121502553132 is an abundant number, since it is smaller than the sum of its proper divisors (162015300564).

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

121502553132 is a wasteful number, since it uses less digits than its factorization.

121502553132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424877 (or 424875 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 121502553132 its reverse (231355205121), we get a palindrome (352857758253).

The spelling of 121502553132 in words is "one hundred twenty-one billion, five hundred two million, five hundred fifty-three thousand, one hundred thirty-two".