3603036221 has 2 divisors, whose sum is σ = 3603036222. Its totient is φ = 3603036220.

The previous prime is 3603036193. The next prime is 3603036247. The reversal of 3603036221 is 1226303063.

It is an a-pointer prime, because the next prime (3603036247) can be obtained adding 3603036221 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3601320121 + 1716100 = 60011^2 + 1310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3603036221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3603033221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1801518110 + 1801518111.

It is an arithmetic number, because the mean of its divisors is an integer number (1801518111).

Almost surely, 2^3603036221 is an apocalyptic number.

It is an amenable number.

3603036221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3603036221 is an equidigital number, since it uses as much as digits as its factorization.

3603036221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 3603036221 is about 60025.2965090552. The cubic root of 3603036221 is about 1533.0496112673.

Adding to 3603036221 its reverse (1226303063), we get a palindrome (4829339284).

The spelling of 3603036221 in words is "three billion, six hundred three million, thirty-six thousand, two hundred twenty-one".