10021100123 has 2 divisors, whose sum is σ = 10021100124. Its totient is φ = 10021100122.

The previous prime is 10021100107. The next prime is 10021100149. The reversal of 10021100123 is 32100112001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10021100123 - 2⁴ = 10021100107 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (10021130123) 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, 5010550061 + 5010550062.

It is an arithmetic number, because the mean of its divisors is an integer number (5010550062).

Almost surely, 2^10021100123 is an apocalyptic number.

10021100123 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021100123 is an equidigital number, since it uses as much as digits as its factorization.

10021100123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10021100123 its reverse (32100112001), we get a palindrome (42121212124).

The spelling of 10021100123 in words is "ten billion, twenty-one million, one hundred thousand, one hundred twenty-three".