1111122123 has 16 divisors (see below), whose sum is σ = 1520824320. Its totient is φ = 721341504.

The previous prime is 1111122121. The next prime is 1111122139. The reversal of 1111122123 is 3212211111.

It is not a de Polignac number, because 1111122123 - 2¹ = 1111122121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111122121) 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 in 15 ways as a sum of consecutive naturals, for example, 14811 + ... + 49412.

It is an arithmetic number, because the mean of its divisors is an integer number (95051520).

Almost surely, 2^1111122123 is an apocalyptic number.

1111122123 is a deficient number, since it is larger than the sum of its proper divisors (409702197).

1111122123 is an equidigital number, since it uses as much as digits as its factorization.

1111122123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64378.

The product of its digits is 24, while the sum is 15.

The square root of 1111122123 is about 33333.4985112574. The cubic root of 1111122123 is about 1035.7475902899.

Adding to 1111122123 its reverse (3212211111), we get a palindrome (4323333234).

The spelling of 1111122123 in words is "one billion, one hundred eleven million, one hundred twenty-two thousand, one hundred twenty-three".