1021123003123 has 2 divisors, whose sum is σ = 1021123003124. Its totient is φ = 1021123003122.

The previous prime is 1021123003099. The next prime is 1021123003151. The reversal of 1021123003123 is 3213003211201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021123003123 - 2⁵ = 1021123003091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021123003123.

It is not a weakly prime, because it can be changed into another prime (1021123003163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510561501561 + 510561501562.

It is an arithmetic number, because the mean of its divisors is an integer number (510561501562).

Almost surely, 2^{1021123003123} is an apocalyptic number.

1021123003123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021123003123 is an equidigital number, since it uses as much as digits as its factorization.

1021123003123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1021123003123 its reverse (3213003211201), we get a palindrome (4234126214324).

The spelling of 1021123003123 in words is "one trillion, twenty-one billion, one hundred twenty-three million, three thousand, one hundred twenty-three".