220212122222111 has 16 divisors (see below), whose sum is σ = 227308736083968. Its totient is φ = 213197730782400.

The previous prime is 220212122222077. The next prime is 220212122222159. The reversal of 220212122222111 is 111222221212022.

It is a cyclic number.

It is not a de Polignac number, because 220212122222111 - 2²² = 220212118027807 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 (220212122225111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383433410 + ... + 384007296.

It is an arithmetic number, because the mean of its divisors is an integer number (14206796005248).

Almost surely, 2^{220212122222111} is an apocalyptic number.

220212122222111 is a deficient number, since it is larger than the sum of its proper divisors (7096613861857).

220212122222111 is a wasteful number, since it uses less digits than its factorization.

220212122222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645502.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 220212122222111 its reverse (111222221212022), we get a palindrome (331434343434133).

The spelling of 220212122222111 in words is "two hundred twenty trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred eleven".