220121222120 has 32 divisors (see below), whose sum is σ = 521339738400. Its totient is φ = 83414357568.

The previous prime is 220121222117. The next prime is 220121222143. The reversal of 220121222120 is 21222121022.

It is a happy number.

220121222120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144815834 + ... + 144817353.

It is an arithmetic number, because the mean of its divisors is an integer number (16291866825).

Almost surely, 2^220121222120 is an apocalyptic number.

220121222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220121222120 is an abundant number, since it is smaller than the sum of its proper divisors (301218516280).

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

220121222120 is a wasteful number, since it uses less digits than its factorization.

220121222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289633217 (or 289633213 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 220121222120 its reverse (21222121022), we get a palindrome (241343343142).

The spelling of 220121222120 in words is "two hundred twenty billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty".