120121320240 has 120 divisors (see below), whose sum is σ = 406309984080. Its totient is φ = 31801876992.

The previous prime is 120121320217. The next prime is 120121320287. The reversal of 120121320240 is 42023121021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 500047 + ... + 700206.

It is an arithmetic number, because the mean of its divisors is an integer number (3385916534).

Almost surely, 2^120121320240 is an apocalyptic number.

120121320240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120121320240 is an abundant number, since it is smaller than the sum of its proper divisors (286188663840).

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

120121320240 is a wasteful number, since it uses less digits than its factorization.

120121320240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200411 (or 1200402 counting only the distinct ones).

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

Adding to 120121320240 its reverse (42023121021), we get a palindrome (162144441261).

The spelling of 120121320240 in words is "one hundred twenty billion, one hundred twenty-one million, three hundred twenty thousand, two hundred forty".