100221122087 has 2 divisors, whose sum is σ = 100221122088. Its totient is φ = 100221122086.

The previous prime is 100221122083. The next prime is 100221122101. The reversal of 100221122087 is 780221122001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100221122087 - 2² = 100221122083 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100221122083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110561043 + 50110561044.

It is an arithmetic number, because the mean of its divisors is an integer number (50110561044).

Almost surely, 2^100221122087 is an apocalyptic number.

100221122087 is a deficient number, since it is larger than the sum of its proper divisors (1).

100221122087 is an equidigital number, since it uses as much as digits as its factorization.

100221122087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 100221122087 its reverse (780221122001), we get a palindrome (880442244088).

The spelling of 100221122087 in words is "one hundred billion, two hundred twenty-one million, one hundred twenty-two thousand, eighty-seven".