1121604125123 has 2 divisors, whose sum is σ = 1121604125124. Its totient is φ = 1121604125122.

The previous prime is 1121604125113. The next prime is 1121604125203. The reversal of 1121604125123 is 3215214061211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121604125123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121604125113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560802062561 + 560802062562.

It is an arithmetic number, because the mean of its divisors is an integer number (560802062562).

Almost surely, 2^{1121604125123} is an apocalyptic number.

1121604125123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121604125123 is an equidigital number, since it uses as much as digits as its factorization.

1121604125123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 1121604125123 its reverse (3215214061211), we get a palindrome (4336818186334).

The spelling of 1121604125123 in words is "one trillion, one hundred twenty-one billion, six hundred four million, one hundred twenty-five thousand, one hundred twenty-three".