220521116 has 6 divisors (see below), whose sum is σ = 385911960. Its totient is φ = 110260556.

The previous prime is 220521113. The next prime is 220521121. The reversal of 220521116 is 611125022.

It is a super-3 number, since 3×220521116³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220521113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27565136 + ... + 27565143.

It is an arithmetic number, because the mean of its divisors is an integer number (64318660).

Almost surely, 2^220521116 is an apocalyptic number.

It is an amenable number.

220521116 is a deficient number, since it is larger than the sum of its proper divisors (165390844).

220521116 is a wasteful number, since it uses less digits than its factorization.

220521116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55130283 (or 55130281 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 220521116 is about 14849.9534006003. The cubic root of 220521116 is about 604.1573461096.

Adding to 220521116 its reverse (611125022), we get a palindrome (831646138).

The spelling of 220521116 in words is "two hundred twenty million, five hundred twenty-one thousand, one hundred sixteen".