220120311 has 16 divisors (see below), whose sum is σ = 301682304. Its totient is φ = 142683744.

The previous prime is 220120283. The next prime is 220120343. The reversal of 220120311 is 113021022.

It is not a de Polignac number, because 220120311 - 2⁶ = 220120247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220120211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25525 + ... + 33041.

It is an arithmetic number, because the mean of its divisors is an integer number (18855144).

Almost surely, 2^220120311 is an apocalyptic number.

220120311 is a deficient number, since it is larger than the sum of its proper divisors (81561993).

220120311 is a wasteful number, since it uses less digits than its factorization.

220120311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7790.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 220120311 is about 14836.4521028445. The cubic root of 220120311 is about 603.7910982829.

Adding to 220120311 its reverse (113021022), we get a palindrome (333141333).

The spelling of 220120311 in words is "two hundred twenty million, one hundred twenty thousand, three hundred eleven".