220221311 has 8 divisors (see below), whose sum is σ = 222816000. Its totient is φ = 217637280.

The previous prime is 220221233. The next prime is 220221341. The reversal of 220221311 is 113122022.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220221311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221341) 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, 43490 + ... + 48288.

It is an arithmetic number, because the mean of its divisors is an integer number (27852000).

Almost surely, 2^220221311 is an apocalyptic number.

220221311 is a deficient number, since it is larger than the sum of its proper divisors (2594689).

220221311 is a wasteful number, since it uses less digits than its factorization.

220221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329.

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

The square root of 220221311 is about 14839.8554912101. The cubic root of 220221311 is about 603.8834319949.

Adding to 220221311 its reverse (113122022), we get a palindrome (333343333).

The spelling of 220221311 in words is "two hundred twenty million, two hundred twenty-one thousand, three hundred eleven".