100221209941 has 2 divisors, whose sum is σ = 100221209942. Its totient is φ = 100221209940.

The previous prime is 100221209917. The next prime is 100221209989. The reversal of 100221209941 is 149902122001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72188405041 + 28032804900 = 268679^2 + 167430^2 .

It is a cyclic number.

It is not a de Polignac number, because 100221209941 - 2⁵ = 100221209909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100221209911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110604970 + 50110604971.

It is an arithmetic number, because the mean of its divisors is an integer number (50110604971).

Almost surely, 2^100221209941 is an apocalyptic number.

It is an amenable number.

100221209941 is a deficient number, since it is larger than the sum of its proper divisors (1).

100221209941 is an equidigital number, since it uses as much as digits as its factorization.

100221209941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 100221209941 in words is "one hundred billion, two hundred twenty-one million, two hundred nine thousand, nine hundred forty-one".