1230220111 has 2 divisors, whose sum is σ = 1230220112. Its totient is φ = 1230220110.

The previous prime is 1230220099. The next prime is 1230220177. The reversal of 1230220111 is 1110220321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1230220111 - 2²³ = 1221831503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1230220091 and 1230220100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230224111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615110055 + 615110056.

It is an arithmetic number, because the mean of its divisors is an integer number (615110056).

Almost surely, 2^1230220111 is an apocalyptic number.

1230220111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230220111 is an equidigital number, since it uses as much as digits as its factorization.

1230220111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1230220111 is about 35074.4937383279. The cubic root of 1230220111 is about 1071.5051780764.

Adding to 1230220111 its reverse (1110220321), we get a palindrome (2340440432).

The spelling of 1230220111 in words is "one billion, two hundred thirty million, two hundred twenty thousand, one hundred eleven".