210130321123 has 2 divisors, whose sum is σ = 210130321124. Its totient is φ = 210130321122.

The previous prime is 210130321111. The next prime is 210130321133. The reversal of 210130321123 is 321123031012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210130321123 is a prime.

It is a super-2 number, since 2×210130321123² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210130321123.

It is not a weakly prime, because it can be changed into another prime (210130321133) 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, 105065160561 + 105065160562.

It is an arithmetic number, because the mean of its divisors is an integer number (105065160562).

Almost surely, 2^210130321123 is an apocalyptic number.

210130321123 is a deficient number, since it is larger than the sum of its proper divisors (1).

210130321123 is an equidigital number, since it uses as much as digits as its factorization.

210130321123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 210130321123 its reverse (321123031012), we get a palindrome (531253352135).

The spelling of 210130321123 in words is "two hundred ten billion, one hundred thirty million, three hundred twenty-one thousand, one hundred twenty-three".