101004221 has 2 divisors, whose sum is σ = 101004222. Its totient is φ = 101004220.

The previous prime is 101004217. The next prime is 101004229. The reversal of 101004221 is 122400101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71995225 + 29008996 = 8485^2 + 5386^2 .

It is a cyclic number.

It is not a de Polignac number, because 101004221 - 2² = 101004217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101004229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50502110 + 50502111.

It is an arithmetic number, because the mean of its divisors is an integer number (50502111).

Almost surely, 2^101004221 is an apocalyptic number.

It is an amenable number.

101004221 is a deficient number, since it is larger than the sum of its proper divisors (1).

101004221 is an equidigital number, since it uses as much as digits as its factorization.

101004221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 101004221 is about 10050.0856215258. The cubic root of 101004221 is about 465.7074382270.

Adding to 101004221 its reverse (122400101), we get a palindrome (223404322).

The spelling of 101004221 in words is "one hundred one million, four thousand, two hundred twenty-one".