121112243552 has 24 divisors (see below), whose sum is σ = 250989190200. Its totient is φ = 57368957184.

The previous prime is 121112243543. The next prime is 121112243579. The reversal of 121112243552 is 255342211121.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 99598277 + ... + 99599492.

It is an arithmetic number, because the mean of its divisors is an integer number (10457882925).

Almost surely, 2^121112243552 is an apocalyptic number.

It is an amenable number.

121112243552 is an abundant number, since it is smaller than the sum of its proper divisors (129876946648).

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

121112243552 is a wasteful number, since it uses less digits than its factorization.

121112243552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199197798 (or 199197790 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

Adding to 121112243552 its reverse (255342211121), we get a palindrome (376454454673).

The spelling of 121112243552 in words is "one hundred twenty-one billion, one hundred twelve million, two hundred forty-three thousand, five hundred fifty-two".