220213121 has 16 divisors (see below), whose sum is σ = 237730176. Its totient is φ = 203233536.

The previous prime is 220213117. The next prime is 220213141. The reversal of 220213121 is 121312022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 220213121 - 2² = 220213117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220213096 and 220213105.

It is not an unprimeable number, because it can be changed into a prime (220213141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451940 + ... + 452426.

It is an arithmetic number, because the mean of its divisors is an integer number (14858136).

Almost surely, 2^220213121 is an apocalyptic number.

It is an amenable number.

220213121 is a deficient number, since it is larger than the sum of its proper divisors (17517055).

220213121 is a wasteful number, since it uses less digits than its factorization.

220213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 220213121 is about 14839.5795425612. The cubic root of 220213121 is about 603.8759457884.

Adding to 220213121 its reverse (121312022), we get a palindrome (341525143).

The spelling of 220213121 in words is "two hundred twenty million, two hundred thirteen thousand, one hundred twenty-one".