100144002100421 has 2 divisors, whose sum is σ = 100144002100422. Its totient is φ = 100144002100420.

The previous prime is 100144002100399. The next prime is 100144002100451. The reversal of 100144002100421 is 124001200441001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87977083752100 + 12166918348321 = 9379610^2 + 3488111^2 .

It is a cyclic number.

It is not a de Polignac number, because 100144002100421 - 2³⁰ = 100142928358597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100144002100393 and 100144002100402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100144002100451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50072001050210 + 50072001050211.

It is an arithmetic number, because the mean of its divisors is an integer number (50072001050211).

Almost surely, 2^{100144002100421} is an apocalyptic number.

It is an amenable number.

100144002100421 is a deficient number, since it is larger than the sum of its proper divisors (1).

100144002100421 is an equidigital number, since it uses as much as digits as its factorization.

100144002100421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 100144002100421 its reverse (124001200441001), we get a palindrome (224145202541422).

The spelling of 100144002100421 in words is "one hundred trillion, one hundred forty-four billion, two million, one hundred thousand, four hundred twenty-one".