10541221 has 2 divisors, whose sum is σ = 10541222. Its totient is φ = 10541220.

The previous prime is 10541203. The next prime is 10541233. The reversal of 10541221 is 12214501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10150596 + 390625 = 3186^2 + 625^2 .

It is a cyclic number.

It is not a de Polignac number, because 10541221 - 2⁷ = 10541093 is a prime.

It is a super-2 number, since 2×10541221² = 222234680341682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10541195 and 10541204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10541021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5270610 + 5270611.

It is an arithmetic number, because the mean of its divisors is an integer number (5270611).

Almost surely, 2^10541221 is an apocalyptic number.

It is an amenable number.

10541221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10541221 is an equidigital number, since it uses as much as digits as its factorization.

10541221 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 10541221 is about 3246.7246572507. The cubic root of 10541221 is about 219.2621354589.

Adding to 10541221 its reverse (12214501), we get a palindrome (22755722).

It can be divided in two parts, 10541 and 221, that multiplied together give a triangular number (2329561 = T₂₁₅₈).

The spelling of 10541221 in words is "ten million, five hundred forty-one thousand, two hundred twenty-one".