220021110111 has 16 divisors (see below), whose sum is σ = 320276378880. Its totient is φ = 133243763520.

The previous prime is 220021110103. The next prime is 220021110139. The reversal of 220021110111 is 111011120022.

It is not a de Polignac number, because 220021110111 - 2³ = 220021110103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220021110311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2515446 + ... + 2601443.

It is an arithmetic number, because the mean of its divisors is an integer number (20017273680).

Almost surely, 2^220021110111 is an apocalyptic number.

220021110111 is a deficient number, since it is larger than the sum of its proper divisors (100255268769).

220021110111 is a wasteful number, since it uses less digits than its factorization.

220021110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118206.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 220021110111 its reverse (111011120022), we get a palindrome (331032230133).

The spelling of 220021110111 in words is "two hundred twenty billion, twenty-one million, one hundred ten thousand, one hundred eleven".