220240102121 has 16 divisors (see below), whose sum is σ = 239987195280. Its totient is φ = 200896481280.

The previous prime is 220240102109. The next prime is 220240102177. The reversal of 220240102121 is 121201042022.

220240102121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3024450025 + 217215652096 = 54995^2 + 466064^2 .

It is a cyclic number.

It is not a de Polignac number, because 220240102121 - 2¹⁰ = 220240101097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220240102121.

It is not an unprimeable number, because it can be changed into a prime (220240182121) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1950161 + ... + 2060001.

It is an arithmetic number, because the mean of its divisors is an integer number (14999199705).

Almost surely, 2^220240102121 is an apocalyptic number.

It is an amenable number.

220240102121 is a deficient number, since it is larger than the sum of its proper divisors (19747093159).

220240102121 is a wasteful number, since it uses less digits than its factorization.

220240102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111676.

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

Adding to 220240102121 its reverse (121201042022), we get a palindrome (341441144143).

The spelling of 220240102121 in words is "two hundred twenty billion, two hundred forty million, one hundred two thousand, one hundred twenty-one".