220212111 has 16 divisors (see below), whose sum is σ = 336487424. Its totient is φ = 125488224.

The previous prime is 220212079. The next prime is 220212121. The reversal of 220212111 is 111212022.

It is not a de Polignac number, because 220212111 - 2⁵ = 220212079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212121) 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 in 15 ways as a sum of consecutive naturals, for example, 6580 + ... + 21993.

It is an arithmetic number, because the mean of its divisors is an integer number (21030464).

Almost surely, 2^220212111 is an apocalyptic number.

220212111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

220212111 is a deficient number, since it is larger than the sum of its proper divisors (116275313).

220212111 is a wasteful number, since it uses less digits than its factorization.

220212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28950.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 220212111 is about 14839.5455119084. The cubic root of 220212111 is about 603.8750225682.

Adding to 220212111 its reverse (111212022), we get a palindrome (331424133).

The spelling of 220212111 in words is "two hundred twenty million, two hundred twelve thousand, one hundred eleven".