2120211302123 has 2 divisors, whose sum is σ = 2120211302124. Its totient is φ = 2120211302122.

The previous prime is 2120211302119. The next prime is 2120211302141. The reversal of 2120211302123 is 3212031120212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120211302123 - 2² = 2120211302119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120211302095 and 2120211302104.

It is not a weakly prime, because it can be changed into another prime (2120214302123) 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, 1060105651061 + 1060105651062.

It is an arithmetic number, because the mean of its divisors is an integer number (1060105651062).

Almost surely, 2^{2120211302123} is an apocalyptic number.

2120211302123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120211302123 is an equidigital number, since it uses as much as digits as its factorization.

2120211302123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2120211302123 its reverse (3212031120212), we get a palindrome (5332242422335).

The spelling of 2120211302123 in words is "two trillion, one hundred twenty billion, two hundred eleven million, three hundred two thousand, one hundred twenty-three".