115550220120 has 64 divisors (see below), whose sum is σ = 350545644000. Its totient is φ = 30467171328.

The previous prime is 115550220109. The next prime is 115550220161. The reversal of 115550220120 is 21022055511.

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

It is a congruent number.

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, 5398975 + ... + 5420334.

Almost surely, 2^115550220120 is an apocalyptic number.

115550220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115550220120 is an abundant number, since it is smaller than the sum of its proper divisors (234995423880).

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

115550220120 is a wasteful number, since it uses less digits than its factorization.

115550220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10819412 (or 10819408 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

Adding to 115550220120 its reverse (21022055511), we get a palindrome (136572275631).

The spelling of 115550220120 in words is "one hundred fifteen billion, five hundred fifty million, two hundred twenty thousand, one hundred twenty".