4553221121 has 2 divisors, whose sum is σ = 4553221122. Its totient is φ = 4553221120.

The previous prime is 4553221111. The next prime is 4553221157. The reversal of 4553221121 is 1211223554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4268792896 + 284428225 = 65336^2 + 16865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4553221121 is a prime.

It is not a weakly prime, because it can be changed into another prime (4553221111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2276610560 + 2276610561.

It is an arithmetic number, because the mean of its divisors is an integer number (2276610561).

Almost surely, 2^4553221121 is an apocalyptic number.

It is an amenable number.

4553221121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4553221121 is an equidigital number, since it uses as much as digits as its factorization.

4553221121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 26.

The square root of 4553221121 is about 67477.5601292756. The cubic root of 4553221121 is about 1657.4467354028.

Adding to 4553221121 its reverse (1211223554), we get a palindrome (5764444675).

The spelling of 4553221121 in words is "four billion, five hundred fifty-three million, two hundred twenty-one thousand, one hundred twenty-one".