44106221 has 2 divisors, whose sum is σ = 44106222. Its totient is φ = 44106220.

The previous prime is 44106197. The next prime is 44106241. The reversal of 44106221 is 12260144.

It is an a-pointer prime, because the next prime (44106241) can be obtained adding 44106221 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25140196 + 18966025 = 5014^2 + 4355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44106221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44106193 and 44106202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44106241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22053110 + 22053111.

It is an arithmetic number, because the mean of its divisors is an integer number (22053111).

Almost surely, 2^44106221 is an apocalyptic number.

It is an amenable number.

44106221 is a deficient number, since it is larger than the sum of its proper divisors (1).

44106221 is an equidigital number, since it uses as much as digits as its factorization.

44106221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 44106221 is about 6641.2514633915. The cubic root of 44106221 is about 353.3186939665.

Adding to 44106221 its reverse (12260144), we get a palindrome (56366365).

The spelling of 44106221 in words is "forty-four million, one hundred six thousand, two hundred twenty-one".