7653011221 has 2 divisors, whose sum is σ = 7653011222. Its totient is φ = 7653011220.

The previous prime is 7653011209. The next prime is 7653011243. The reversal of 7653011221 is 1221103567.

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., 6746158225 + 906852996 = 82135^2 + 30114^2 .

It is an emirp because it is prime and its reverse (1221103567) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7653011221 - 2⁵ = 7653011189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7653011221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7653011321) 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, 3826505610 + 3826505611.

It is an arithmetic number, because the mean of its divisors is an integer number (3826505611).

Almost surely, 2^7653011221 is an apocalyptic number.

It is an amenable number.

7653011221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7653011221 is an equidigital number, since it uses as much as digits as its factorization.

7653011221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 7653011221 is about 87481.4907337546. The cubic root of 7653011221 is about 1970.6558340178.

Adding to 7653011221 its reverse (1221103567), we get a palindrome (8874114788).

The spelling of 7653011221 in words is "seven billion, six hundred fifty-three million, eleven thousand, two hundred twenty-one".