20002102112123 has 2 divisors, whose sum is σ = 20002102112124. Its totient is φ = 20002102112122.

The previous prime is 20002102112119. The next prime is 20002102112137. The reversal of 20002102112123 is 32121120120002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20002102112123 - 2² = 20002102112119 is a prime.

It is not a weakly prime, because it can be changed into another prime (20002102192123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001051056061 + 10001051056062.

It is an arithmetic number, because the mean of its divisors is an integer number (10001051056062).

Almost surely, 2^{20002102112123} is an apocalyptic number.

20002102112123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002102112123 is an equidigital number, since it uses as much as digits as its factorization.

20002102112123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20002102112123 its reverse (32121120120002), we get a palindrome (52123222232125).

The spelling of 20002102112123 in words is "twenty trillion, two billion, one hundred two million, one hundred twelve thousand, one hundred twenty-three".