121450005552 has 80 divisors (see below), whose sum is σ = 328331485440. Its totient is φ = 38611474176.

The previous prime is 121450005527. The next prime is 121450005553. The reversal of 121450005552 is 255500054121.

It is not an unprimeable number, because it can be changed into a prime (121450005553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224574 + ... + 541602.

It is an arithmetic number, because the mean of its divisors is an integer number (4104143568).

Almost surely, 2^121450005552 is an apocalyptic number.

121450005552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121450005552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164165742720).

121450005552 is an abundant number, since it is smaller than the sum of its proper divisors (206881479888).

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

121450005552 is a wasteful number, since it uses less digits than its factorization.

121450005552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317410 (or 317404 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

Adding to 121450005552 its reverse (255500054121), we get a palindrome (376950059673).

The spelling of 121450005552 in words is "one hundred twenty-one billion, four hundred fifty million, five thousand, five hundred fifty-two".