1002100120123 has 2 divisors, whose sum is σ = 1002100120124. Its totient is φ = 1002100120122.

The previous prime is 1002100120121. The next prime is 1002100120127. The reversal of 1002100120123 is 3210210012001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1002100120123 - 2¹ = 1002100120121 is a prime.

Together with 1002100120121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1002100120121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501050060061 + 501050060062.

It is an arithmetic number, because the mean of its divisors is an integer number (501050060062).

Almost surely, 2^{1002100120123} is an apocalyptic number.

1002100120123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002100120123 is an equidigital number, since it uses as much as digits as its factorization.

1002100120123 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 1002100120123 its reverse (3210210012001), we get a palindrome (4212310132124).

The spelling of 1002100120123 in words is "one trillion, two billion, one hundred million, one hundred twenty thousand, one hundred twenty-three".