100221031927 has 2 divisors, whose sum is σ = 100221031928. Its totient is φ = 100221031926.

The previous prime is 100221031921. The next prime is 100221031973. The reversal of 100221031927 is 729130122001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100221031927 - 2¹¹ = 100221029879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100221031895 and 100221031904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100221031921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110515963 + 50110515964.

It is an arithmetic number, because the mean of its divisors is an integer number (50110515964).

Almost surely, 2^100221031927 is an apocalyptic number.

100221031927 is a deficient number, since it is larger than the sum of its proper divisors (1).

100221031927 is an equidigital number, since it uses as much as digits as its factorization.

100221031927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

Adding to 100221031927 its reverse (729130122001), we get a palindrome (829351153928).

The spelling of 100221031927 in words is "one hundred billion, two hundred twenty-one million, thirty-one thousand, nine hundred twenty-seven".