1122121223 has 2 divisors, whose sum is σ = 1122121224. Its totient is φ = 1122121222.

The previous prime is 1122121213. The next prime is 1122121267. The reversal of 1122121223 is 3221212211.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122121223 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122121213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561060611 + 561060612.

It is an arithmetic number, because the mean of its divisors is an integer number (561060612).

Almost surely, 2^1122121223 is an apocalyptic number.

1122121223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122121223 is an equidigital number, since it uses as much as digits as its factorization.

1122121223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 17.

The square root of 1122121223 is about 33498.0779000826. The cubic root of 1122121223 is about 1039.1540282053.

Adding to 1122121223 its reverse (3221212211), we get a palindrome (4343333434).

The spelling of 1122121223 in words is "one billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-three".