10145231450021 has 2 divisors, whose sum is σ = 10145231450022. Its totient is φ = 10145231450020.

The previous prime is 10145231450009. The next prime is 10145231450051. The reversal of 10145231450021 is 12005413254101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9383776257025 + 761455192996 = 3063295^2 + 872614^2 .

It is a cyclic number.

It is not a de Polignac number, because 10145231450021 - 2¹⁸ = 10145231187877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10145231450051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5072615725010 + 5072615725011.

It is an arithmetic number, because the mean of its divisors is an integer number (5072615725011).

Almost surely, 2^{10145231450021} is an apocalyptic number.

It is an amenable number.

10145231450021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10145231450021 is an equidigital number, since it uses as much as digits as its factorization.

10145231450021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 29.

The spelling of 10145231450021 in words is "ten trillion, one hundred forty-five billion, two hundred thirty-one million, four hundred fifty thousand, twenty-one".