121004442240 has 128 divisors (see below), whose sum is σ = 420765520320. Its totient is φ = 29334405120.

The previous prime is 121004442179. The next prime is 121004442257. The reversal of 121004442240 is 42244400121.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 121004442240.

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, 2843569 + ... + 2885808.

Almost surely, 2^121004442240 is an apocalyptic number.

121004442240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121004442240 is an abundant number, since it is smaller than the sum of its proper divisors (299761078080).

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

121004442240 is a wasteful number, since it uses less digits than its factorization.

121004442240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5729410 (or 5729398 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 121004442240 its reverse (42244400121), we get a palindrome (163248842361).

The spelling of 121004442240 in words is "one hundred twenty-one billion, four million, four hundred forty-two thousand, two hundred forty".