101120221 has 2 divisors, whose sum is σ = 101120222. Its totient is φ = 101120220.

The previous prime is 101120177. The next prime is 101120231. The reversal of 101120221 is 122021101.

It is an a-pointer prime, because the next prime (101120231) can be obtained adding 101120221 to its sum of digits (10).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97239321 + 3880900 = 9861^2 + 1970^2 .

It is an emirp because it is prime and its reverse (122021101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101120221 - 2⁷ = 101120093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101120198 and 101120207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101120231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50560110 + 50560111.

It is an arithmetic number, because the mean of its divisors is an integer number (50560111).

Almost surely, 2^101120221 is an apocalyptic number.

It is an amenable number.

101120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

101120221 is an equidigital number, since it uses as much as digits as its factorization.

101120221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 101120221 is about 10055.8550606102. The cubic root of 101120221 is about 465.8856532053.

Adding to 101120221 its reverse (122021101), we get a palindrome (223141322).

The spelling of 101120221 in words is "one hundred one million, one hundred twenty thousand, two hundred twenty-one".