1002012100123 has 2 divisors, whose sum is σ = 1002012100124. Its totient is φ = 1002012100122.

The previous prime is 1002012100121. The next prime is 1002012100129. The reversal of 1002012100123 is 3210012102001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1002012100123 - 2¹ = 1002012100121 is a prime.

Together with 1002012100121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1002012100121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501006050061 + 501006050062.

It is an arithmetic number, because the mean of its divisors is an integer number (501006050062).

Almost surely, 2^{1002012100123} is an apocalyptic number.

1002012100123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002012100123 is an equidigital number, since it uses as much as digits as its factorization.

1002012100123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1002012100123 its reverse (3210012102001), we get a palindrome (4212024202124).

The spelling of 1002012100123 in words is "one trillion, two billion, twelve million, one hundred thousand, one hundred twenty-three".