100203213320381 has 2 divisors, whose sum is σ = 100203213320382. Its totient is φ = 100203213320380.

The previous prime is 100203213320333. The next prime is 100203213320389. The reversal of 100203213320381 is 183023312302001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82833206625625 + 17370006694756 = 9101275^2 + 4167734^2 .

It is a cyclic number.

It is not a de Polignac number, because 100203213320381 - 2⁴² = 95805166809277 is a prime.

It is a super-2 number, since 2×100203213320381² (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 (100203213320389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50101606660190 + 50101606660191.

It is an arithmetic number, because the mean of its divisors is an integer number (50101606660191).

Almost surely, 2^{100203213320381} is an apocalyptic number.

It is an amenable number.

100203213320381 is a deficient number, since it is larger than the sum of its proper divisors (1).

100203213320381 is an equidigital number, since it uses as much as digits as its factorization.

100203213320381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 100203213320381 its reverse (183023312302001), we get a palindrome (283226525622382).

The spelling of 100203213320381 in words is "one hundred trillion, two hundred three billion, two hundred thirteen million, three hundred twenty thousand, three hundred eighty-one".