220201111111 has 4 divisors (see below), whose sum is σ = 220350807424. Its totient is φ = 220051414800.

The previous prime is 220201111051. The next prime is 220201111133. The reversal of 220201111111 is 111111102022.

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 220201111111 - 2²¹ = 220199013959 is a prime.

It is a Duffinian number.

220201111111 is a modest number, since divided by 1111111 gives 22020 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 220201111091 and 220201111100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220201111411) 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, 74845950 + ... + 74848891.

It is an arithmetic number, because the mean of its divisors is an integer number (55087701856).

Almost surely, 2^220201111111 is an apocalyptic number.

220201111111 is a deficient number, since it is larger than the sum of its proper divisors (149696313).

220201111111 is a wasteful number, since it uses less digits than its factorization.

220201111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149696312.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 220201111111 its reverse (111111102022), we get a palindrome (331312213133).

It can be divided in two parts, 2202011 and 11111, that added together give a palindrome (2213122).

The spelling of 220201111111 in words is "two hundred twenty billion, two hundred one million, one hundred eleven thousand, one hundred eleven".