121163124240 has 320 divisors, whose sum is σ = 425040295680. Its totient is φ = 32115377664.

The previous prime is 121163124233. The next prime is 121163124283. The reversal of 121163124240 is 42421361121.

121163124240 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 631 + 2 + 4 + 24 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30266079 + ... + 30270081.

It is an arithmetic number, because the mean of its divisors is an integer number (1328250924).

Almost surely, 2^121163124240 is an apocalyptic number.

121163124240 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 121163124240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212520147840).

121163124240 is an abundant number, since it is smaller than the sum of its proper divisors (303877171440).

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

121163124240 is an equidigital number, since it uses as much as digits as its factorization.

121163124240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210 (or 4186 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 121163124240 its reverse (42421361121), we get a palindrome (163584485361).

The spelling of 121163124240 in words is "one hundred twenty-one billion, one hundred sixty-three million, one hundred twenty-four thousand, two hundred forty".