1204220111 has 2 divisors, whose sum is σ = 1204220112. Its totient is φ = 1204220110.

The previous prime is 1204220081. The next prime is 1204220153. The reversal of 1204220111 is 1110224021.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1110224021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1204220111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1204220411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602110055 + 602110056.

It is an arithmetic number, because the mean of its divisors is an integer number (602110056).

Almost surely, 2^1204220111 is an apocalyptic number.

1204220111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204220111 is an equidigital number, since it uses as much as digits as its factorization.

1204220111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1204220111 is about 34701.8747476271. The cubic root of 1204220111 is about 1063.9028165025.

Adding to 1204220111 its reverse (1110224021), we get a palindrome (2314444132).

The spelling of 1204220111 in words is "one billion, two hundred four million, two hundred twenty thousand, one hundred eleven".