220111229 has 4 divisors (see below), whose sum is σ = 237042876. Its totient is φ = 203179584.

The previous prime is 220111217. The next prime is 220111259. The reversal of 220111229 is 922111022.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37185604 + 182925625 = 6098^2 + 13525^2 .

It is a cyclic number.

It is not a de Polignac number, because 220111229 - 2¹² = 220107133 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 220111229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111259) 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, 8465804 + ... + 8465829.

It is an arithmetic number, because the mean of its divisors is an integer number (59260719).

Almost surely, 2^220111229 is an apocalyptic number.

It is an amenable number.

220111229 is a deficient number, since it is larger than the sum of its proper divisors (16931647).

220111229 is a wasteful number, since it uses less digits than its factorization.

220111229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16931646.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 220111229 is about 14836.1460292085. The cubic root of 220111229 is about 603.7827941785.

The spelling of 220111229 in words is "two hundred twenty million, one hundred eleven thousand, two hundred twenty-nine".