10000123144021 has 2 divisors, whose sum is σ = 10000123144022. Its totient is φ = 10000123144020.

The previous prime is 10000123143953. The next prime is 10000123144031. The reversal of 10000123144021 is 12044132100001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7018419592900 + 2981703551121 = 2649230^2 + 1726761^2 .

It is a cyclic number.

It is not a de Polignac number, because 10000123144021 - 2³³ = 9991533209429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10000123144021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10000123144031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000061572010 + 5000061572011.

It is an arithmetic number, because the mean of its divisors is an integer number (5000061572011).

Almost surely, 2^{10000123144021} is an apocalyptic number.

It is an amenable number.

10000123144021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10000123144021 is an equidigital number, since it uses as much as digits as its factorization.

10000123144021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 10000123144021 its reverse (12044132100001), we get a palindrome (22044255244022).

The spelling of 10000123144021 in words is "ten trillion, one hundred twenty-three million, one hundred forty-four thousand, twenty-one".