220111200222221 has 64 divisors (see below), whose sum is σ = 289987882500096. Its totient is φ = 162053452915200.

The previous prime is 220111200222211. The next prime is 220111200222223. The reversal of 220111200222221 is 122222002111022.

It is not a de Polignac number, because 220111200222221 - 2¹⁰ = 220111200221197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220111200222193 and 220111200222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111200222223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 241469921 + ... + 242379753.

It is an arithmetic number, because the mean of its divisors is an integer number (4531060664064).

Almost surely, 2^{220111200222221} is an apocalyptic number.

It is an amenable number.

220111200222221 is a deficient number, since it is larger than the sum of its proper divisors (69876682277875).

220111200222221 is a wasteful number, since it uses less digits than its factorization.

220111200222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912282.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 220111200222221 its reverse (122222002111022), we get a palindrome (342333202333243).

The spelling of 220111200222221 in words is "two hundred twenty trillion, one hundred eleven billion, two hundred million, two hundred twenty-two thousand, two hundred twenty-one".