220011121 has 8 divisors (see below), whose sum is σ = 240122304. Its totient is φ = 199918320.

The previous prime is 220011107. The next prime is 220011149. The reversal of 220011121 is 121110022.

220011121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220011121 - 2¹¹ = 220009073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220011098 and 220011107.

It is not an unprimeable number, because it can be changed into a prime (220011151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36316 + ... + 41938.

It is an arithmetic number, because the mean of its divisors is an integer number (30015288).

Almost surely, 2^220011121 is an apocalyptic number.

It is an amenable number.

220011121 is a deficient number, since it is larger than the sum of its proper divisors (20111183).

220011121 is a wasteful number, since it uses less digits than its factorization.

220011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9191.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 220011121 is about 14832.7718582873. The cubic root of 220011121 is about 603.6912455345.

Adding to 220011121 its reverse (121110022), we get a palindrome (341121143).

The spelling of 220011121 in words is "two hundred twenty million, eleven thousand, one hundred twenty-one".