4302221221 has 4 divisors (see below), whose sum is σ = 4303963372. Its totient is φ = 4300479072.

The previous prime is 4302221207. The next prime is 4302221227. The reversal of 4302221221 is 1221222034.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1221222034 = 2 ⋅610611017.

It can be written as a sum of positive squares in 2 ways, for example, as 1931602500 + 2370618721 = 43950^2 + 48689^2 .

It is a cyclic number.

It is not a de Polignac number, because 4302221221 - 2²⁵ = 4268666789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4302221227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867366 + ... + 872311.

It is an arithmetic number, because the mean of its divisors is an integer number (1075990843).

Almost surely, 2^4302221221 is an apocalyptic number.

It is an amenable number.

4302221221 is a deficient number, since it is larger than the sum of its proper divisors (1742151).

4302221221 is a wasteful number, since it uses less digits than its factorization.

4302221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742150.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4302221221 is about 65591.3197077174. The cubic root of 4302221221 is about 1626.4132835971.

Adding to 4302221221 its reverse (1221222034), we get a palindrome (5523443255).

The spelling of 4302221221 in words is "four billion, three hundred two million, two hundred twenty-one thousand, two hundred twenty-one".