220111849 has 2 divisors, whose sum is σ = 220111850. Its totient is φ = 220111848.

The previous prime is 220111847. The next prime is 220111867. The reversal of 220111849 is 948111022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217031824 + 3080025 = 14732^2 + 1755^2 .

It is a cyclic number.

It is not a de Polignac number, because 220111849 - 2¹ = 220111847 is a prime.

Together with 220111847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (220111841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110055924 + 110055925.

It is an arithmetic number, because the mean of its divisors is an integer number (110055925).

Almost surely, 2^220111849 is an apocalyptic number.

It is an amenable number.

220111849 is a deficient number, since it is larger than the sum of its proper divisors (1).

220111849 is an equidigital number, since it uses as much as digits as its factorization.

220111849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 220111849 is about 14836.1669241081. The cubic root of 220111849 is about 603.7833610812.

The spelling of 220111849 in words is "two hundred twenty million, one hundred eleven thousand, eight hundred forty-nine".