220221011201111 has 4 divisors (see below), whose sum is σ = 220221041167032. Its totient is φ = 220220981235192.

The previous prime is 220221011201077. The next prime is 220221011201153. The reversal of 220221011201111 is 111102110122022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 220221011201111 - 2¹⁰ = 220221011200087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220221011201111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221011201911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4392581 + ... + 21441473.

It is an arithmetic number, because the mean of its divisors is an integer number (55055260291758).

Almost surely, 2^{220221011201111} is an apocalyptic number.

220221011201111 is a deficient number, since it is larger than the sum of its proper divisors (29965921).

220221011201111 is a wasteful number, since it uses less digits than its factorization.

220221011201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29965920.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 220221011201111 its reverse (111102110122022), we get a palindrome (331323121323133).

The spelling of 220221011201111 in words is "two hundred twenty trillion, two hundred twenty-one billion, eleven million, two hundred one thousand, one hundred eleven".