4111241221 has 2 divisors, whose sum is σ = 4111241222. Its totient is φ = 4111241220.

The previous prime is 4111241209. The next prime is 4111241249. The reversal of 4111241221 is 1221421114.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3351136321 + 760104900 = 57889^2 + 27570^2 .

It is a cyclic number.

It is not a de Polignac number, because 4111241221 - 2¹⁷ = 4111110149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4111241201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2055620610 + 2055620611.

It is an arithmetic number, because the mean of its divisors is an integer number (2055620611).

Almost surely, 2^4111241221 is an apocalyptic number.

It is an amenable number.

4111241221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4111241221 is an equidigital number, since it uses as much as digits as its factorization.

4111241221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 128, while the sum is 19.

The square root of 4111241221 is about 64118.9614778655. The cubic root of 4111241221 is about 1601.9820775758.

Adding to 4111241221 its reverse (1221421114), we get a palindrome (5332662335).

The spelling of 4111241221 in words is "four billion, one hundred eleven million, two hundred forty-one thousand, two hundred twenty-one".