121123 has 2 divisors, whose sum is σ = 121124. Its totient is φ = 121122.

The previous prime is 121081. The next prime is 121139. The reversal of 121123 is 321121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121123 is a prime.

It is a super-2 number, since 2×121123² = 29341562258, which contains 22 as substring.

121123 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (121523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561 + 60562.

It is an arithmetic number, because the mean of its divisors is an integer number (60562).

2¹²¹¹²³ is an apocalyptic number.

121123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121123 is an equidigital number, since it uses as much as digits as its factorization.

121123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12, while the sum is 10.

The square root of 121123 is about 348.0272977799. The cubic root of 121123 is about 49.4776282267.

Adding to 121123 its reverse (321121), we get a palindrome (442244).

The spelling of 121123 in words is "one hundred twenty-one thousand, one hundred twenty-three", and thus it is an iban number.