210100112021123 has 2 divisors, whose sum is σ = 210100112021124. Its totient is φ = 210100112021122.

The previous prime is 210100112021089. The next prime is 210100112021161. The reversal of 210100112021123 is 321120211001012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210100112021123 is a prime.

It is a super-2 number, since 2×210100112021123² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210100112021323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105050056010561 + 105050056010562.

It is an arithmetic number, because the mean of its divisors is an integer number (105050056010562).

Almost surely, 2^{210100112021123} is an apocalyptic number.

210100112021123 is a deficient number, since it is larger than the sum of its proper divisors (1).

210100112021123 is an equidigital number, since it uses as much as digits as its factorization.

210100112021123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 210100112021123 its reverse (321120211001012), we get a palindrome (531220323022135).

The spelling of 210100112021123 in words is "two hundred ten trillion, one hundred billion, one hundred twelve million, twenty-one thousand, one hundred twenty-three".