2102311322123 has 2 divisors, whose sum is σ = 2102311322124. Its totient is φ = 2102311322122.

The previous prime is 2102311322119. The next prime is 2102311322141. The reversal of 2102311322123 is 3212231132012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102311322123 - 2² = 2102311322119 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2102311325123) 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, 1051155661061 + 1051155661062.

It is an arithmetic number, because the mean of its divisors is an integer number (1051155661062).

Almost surely, 2^{2102311322123} is an apocalyptic number.

2102311322123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102311322123 is an equidigital number, since it uses as much as digits as its factorization.

2102311322123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2102311322123 its reverse (3212231132012), we get a palindrome (5314542454135).

The spelling of 2102311322123 in words is "two trillion, one hundred two billion, three hundred eleven million, three hundred twenty-two thousand, one hundred twenty-three".