100403444230021 has 2 divisors, whose sum is σ = 100403444230022. Its totient is φ = 100403444230020.

The previous prime is 100403444229967. The next prime is 100403444230031. The reversal of 100403444230021 is 120032444304001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87686275169025 + 12717169060996 = 9364095^2 + 3566114^2 .

It is a cyclic number.

It is not a de Polignac number, because 100403444230021 - 2³⁵ = 100369084491653 is a prime.

It is a super-2 number, since 2×100403444230021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100403444230031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50201722115010 + 50201722115011.

It is an arithmetic number, because the mean of its divisors is an integer number (50201722115011).

Almost surely, 2^{100403444230021} is an apocalyptic number.

It is an amenable number.

100403444230021 is a deficient number, since it is larger than the sum of its proper divisors (1).

100403444230021 is an equidigital number, since it uses as much as digits as its factorization.

100403444230021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 100403444230021 its reverse (120032444304001), we get a palindrome (220435888534022).

The spelling of 100403444230021 in words is "one hundred trillion, four hundred three billion, four hundred forty-four million, two hundred thirty thousand, twenty-one".