121001340024 has 80 divisors (see below), whose sum is σ = 339482682000. Its totient is φ = 40266315648.

The previous prime is 121001340017. The next prime is 121001340037. The reversal of 121001340024 is 420043100121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121001339979 and 121001340006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 232284 + ... + 544020.

It is an arithmetic number, because the mean of its divisors is an integer number (4243533525).

Almost surely, 2^121001340024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121001340024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169741341000).

121001340024 is an abundant number, since it is smaller than the sum of its proper divisors (218481341976).

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

121001340024 is a wasteful number, since it uses less digits than its factorization.

121001340024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312354 (or 312341 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 121001340024 its reverse (420043100121), we get a palindrome (541044440145).

The spelling of 121001340024 in words is "one hundred twenty-one billion, one million, three hundred forty thousand, twenty-four".