101045221 has 2 divisors, whose sum is σ = 101045222. Its totient is φ = 101045220.

The previous prime is 101045209. The next prime is 101045237. The reversal of 101045221 is 122540101.

It is an a-pointer prime, because the next prime (101045237) can be obtained adding 101045221 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96314596 + 4730625 = 9814^2 + 2175^2 .

It is a cyclic number.

It is not a de Polignac number, because 101045221 - 2⁹ = 101044709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101045195 and 101045204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101045201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50522610 + 50522611.

It is an arithmetic number, because the mean of its divisors is an integer number (50522611).

Almost surely, 2^101045221 is an apocalyptic number.

It is an amenable number.

101045221 is a deficient number, since it is larger than the sum of its proper divisors (1).

101045221 is an equidigital number, since it uses as much as digits as its factorization.

101045221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 101045221 is about 10052.1251981857. The cubic root of 101045221 is about 465.7704435872.

Adding to 101045221 its reverse (122540101), we get a palindrome (223585322).

The spelling of 101045221 in words is "one hundred one million, forty-five thousand, two hundred twenty-one".