220212221021111 has 16 divisors (see below), whose sum is σ = 242611267802400. Its totient is φ = 198209819904000.

The previous prime is 220212221021101. The next prime is 220212221021189. The reversal of 220212221021111 is 111120122212022.

It is a cyclic number.

It is not a de Polignac number, because 220212221021111 - 2³⁴ = 220195041151927 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 (220212221021101) 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, 302238095 + ... + 302965823.

It is an arithmetic number, because the mean of its divisors is an integer number (15163204237650).

Almost surely, 2^{220212221021111} is an apocalyptic number.

220212221021111 is a deficient number, since it is larger than the sum of its proper divisors (22399046781289).

220212221021111 is a wasteful number, since it uses less digits than its factorization.

220212221021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000210.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 220212221021111 its reverse (111120122212022), we get a palindrome (331332343233133).

The spelling of 220212221021111 in words is "two hundred twenty trillion, two hundred twelve billion, two hundred twenty-one million, twenty-one thousand, one hundred eleven".