1041011221 has 2 divisors, whose sum is σ = 1041011222. Its totient is φ = 1041011220.

The previous prime is 1041011117. The next prime is 1041011249. The reversal of 1041011221 is 1221101401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1022400625 + 18610596 = 31975^2 + 4314^2 .

It is a cyclic number.

It is not a de Polignac number, because 1041011221 - 2¹⁵ = 1040978453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1041011291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520505610 + 520505611.

It is an arithmetic number, because the mean of its divisors is an integer number (520505611).

Almost surely, 2^1041011221 is an apocalyptic number.

It is an amenable number.

1041011221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1041011221 is an equidigital number, since it uses as much as digits as its factorization.

1041011221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1041011221 is about 32264.7054999732. The cubic root of 1041011221 is about 1013.4876718284.

Adding to 1041011221 its reverse (1221101401), we get a palindrome (2262112622).

The spelling of 1041011221 in words is "one billion, forty-one million, eleven thousand, two hundred twenty-one".