100222004444381 has 2 divisors, whose sum is σ = 100222004444382. Its totient is φ = 100222004444380.

The previous prime is 100222004444239. The next prime is 100222004444413. The reversal of 100222004444381 is 183444400222001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65707154940025 + 34514849504356 = 8105995^2 + 5874934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100222004444381 is a prime.

It is a super-2 number, since 2×100222004444381² (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 (100222004444581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50111002222190 + 50111002222191.

It is an arithmetic number, because the mean of its divisors is an integer number (50111002222191).

Almost surely, 2^{100222004444381} is an apocalyptic number.

It is an amenable number.

100222004444381 is a deficient number, since it is larger than the sum of its proper divisors (1).

100222004444381 is an equidigital number, since it uses as much as digits as its factorization.

100222004444381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49152, while the sum is 35.

Adding to 100222004444381 its reverse (183444400222001), we get a palindrome (283666404666382).

The spelling of 100222004444381 in words is "one hundred trillion, two hundred twenty-two billion, four million, four hundred forty-four thousand, three hundred eighty-one".