11159221 has 2 divisors, whose sum is σ = 11159222. Its totient is φ = 11159220.

The previous prime is 11159177. The next prime is 11159233. The reversal of 11159221 is 12295111.

11159221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10923025 + 236196 = 3305^2 + 486^2 .

It is a cyclic number.

It is not a de Polignac number, because 11159221 - 2¹³ = 11151029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11159192 and 11159201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11159261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5579610 + 5579611.

It is an arithmetic number, because the mean of its divisors is an integer number (5579611).

Almost surely, 2^11159221 is an apocalyptic number.

It is an amenable number.

11159221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11159221 is an equidigital number, since it uses as much as digits as its factorization.

11159221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180, while the sum is 22.

The square root of 11159221 is about 3340.5420218881. The cubic root of 11159221 is about 223.4659164244.

It can be divided in two parts, 111592 and 21, that multiplied together give a palindrome (2343432).

The spelling of 11159221 in words is "eleven million, one hundred fifty-nine thousand, two hundred twenty-one".