220132121220 has 72 divisors (see below), whose sum is σ = 728437207680. Its totient is φ = 53365362240.

The previous prime is 220132121201. The next prime is 220132121221. The reversal of 220132121220 is 22121231022.

220132121220 is a `hidden beast` number, since 220 + 1 + 321 + 2 + 122 + 0 = 666.

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 = 220132121193 and 220132121202.

It is not an unprimeable number, because it can be changed into a prime (220132121221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55586940 + ... + 55590899.

It is an arithmetic number, because the mean of its divisors is an integer number (10117183440).

Almost surely, 2^220132121220 is an apocalyptic number.

220132121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220132121220 is an abundant number, since it is smaller than the sum of its proper divisors (508305086460).

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

220132121220 is a wasteful number, since it uses less digits than its factorization.

220132121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111177865 (or 111177860 counting only the distinct ones).

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

Adding to 220132121220 its reverse (22121231022), we get a palindrome (242253352242).

The spelling of 220132121220 in words is "two hundred twenty billion, one hundred thirty-two million, one hundred twenty-one thousand, two hundred twenty".