1131122123 has 2 divisors, whose sum is σ = 1131122124. Its totient is φ = 1131122122.

The previous prime is 1131122053. The next prime is 1131122137. The reversal of 1131122123 is 3212211311.

It is a strong prime.

It is an emirp because it is prime and its reverse (3212211311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1131122123 - 2⁸ = 1131121867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131122143) 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, 565561061 + 565561062.

It is an arithmetic number, because the mean of its divisors is an integer number (565561062).

Almost surely, 2^1131122123 is an apocalyptic number.

1131122123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131122123 is an equidigital number, since it uses as much as digits as its factorization.

1131122123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 17.

The square root of 1131122123 is about 33632.1590594478. The cubic root of 1131122123 is about 1041.9250965102.

Adding to 1131122123 its reverse (3212211311), we get a palindrome (4343333434).

The spelling of 1131122123 in words is "one billion, one hundred thirty-one million, one hundred twenty-two thousand, one hundred twenty-three".