220202221111 has 4 divisors (see below), whose sum is σ = 222382441224. Its totient is φ = 218022001000.

The previous prime is 220202221087. The next prime is 220202221123. The reversal of 220202221111 is 111122202022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220202221111 - 2¹⁹ = 220201696823 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 (220202201111) 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, 1090109905 + ... + 1090110106.

It is an arithmetic number, because the mean of its divisors is an integer number (55595610306).

Almost surely, 2^220202221111 is an apocalyptic number.

220202221111 is a deficient number, since it is larger than the sum of its proper divisors (2180220113).

220202221111 is a wasteful number, since it uses less digits than its factorization.

220202221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180220112.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 220202221111 its reverse (111122202022), we get a palindrome (331324423133).

The spelling of 220202221111 in words is "two hundred twenty billion, two hundred two million, two hundred twenty-one thousand, one hundred eleven".