4011003221 has 2 divisors, whose sum is σ = 4011003222. Its totient is φ = 4011003220.

The previous prime is 4011003197. The next prime is 4011003223. The reversal of 4011003221 is 1223001104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2665140625 + 1345862596 = 51625^2 + 36686^2 .

It is a cyclic number.

It is not a de Polignac number, because 4011003221 - 2²² = 4006808917 is a prime.

Together with 4011003223, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4011003196 and 4011003205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4011003223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2005501610 + 2005501611.

It is an arithmetic number, because the mean of its divisors is an integer number (2005501611).

Almost surely, 2^4011003221 is an apocalyptic number.

It is an amenable number.

4011003221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4011003221 is an equidigital number, since it uses as much as digits as its factorization.

4011003221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 4011003221 is about 63332.4815635705. The cubic root of 4011003221 is about 1588.8552630809.

Adding to 4011003221 its reverse (1223001104), we get a palindrome (5234004325).

The spelling of 4011003221 in words is "four billion, eleven million, three thousand, two hundred twenty-one".