220120032240 has 120 divisors (see below), whose sum is σ = 742182216048. Its totient is φ = 58464768000.

The previous prime is 220120032229. The next prime is 220120032271. The reversal of 220120032240 is 42230021022.

220120032240 is a `hidden beast` number, since 220 + 1 + 200 + 3 + 2 + 240 = 666.

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 a congruent number.

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, 428289 + ... + 789728.

Almost surely, 2^220120032240 is an apocalyptic number.

220120032240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220120032240 is an abundant number, since it is smaller than the sum of its proper divisors (522062183808).

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

220120032240 is a wasteful number, since it uses less digits than its factorization.

220120032240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218287 (or 1218278 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 220120032240 its reverse (42230021022), we get a palindrome (262350053262).

The spelling of 220120032240 in words is "two hundred twenty billion, one hundred twenty million, thirty-two thousand, two hundred forty".