121324112560 has 80 divisors (see below), whose sum is σ = 323072464896. Its totient is φ = 41506907904.

The previous prime is 121324112531. The next prime is 121324112579. The reversal of 121324112560 is 65211423121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25317 + ... + 493243.

Almost surely, 2^121324112560 is an apocalyptic number.

121324112560 is a gapful number since it is divisible by the number (10) 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 121324112560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161536232448).

121324112560 is an abundant number, since it is smaller than the sum of its proper divisors (201748352336).

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

121324112560 is a wasteful number, since it uses less digits than its factorization.

121324112560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468410 (or 468404 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 121324112560 its reverse (65211423121), we get a palindrome (186535535681).

The spelling of 121324112560 in words is "one hundred twenty-one billion, three hundred twenty-four million, one hundred twelve thousand, five hundred sixty".