4421532121 has 4 divisors (see below), whose sum is σ = 4613772672. Its totient is φ = 4229291572.

The previous prime is 4421532107. The next prime is 4421532131. The reversal of 4421532121 is 1212351244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4421532121 - 2⁷ = 4421531993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4421532131) 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 in 3 ways as a sum of consecutive naturals, for example, 96120241 + ... + 96120286.

It is an arithmetic number, because the mean of its divisors is an integer number (1153443168).

Almost surely, 2^4421532121 is an apocalyptic number.

It is an amenable number.

4421532121 is a deficient number, since it is larger than the sum of its proper divisors (192240551).

4421532121 is a wasteful number, since it uses less digits than its factorization.

4421532121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192240550.

The product of its digits is 1920, while the sum is 25.

The square root of 4421532121 is about 66494.6021944639. The cubic root of 4421532121 is about 1641.3111813775.

Adding to 4421532121 its reverse (1212351244), we get a palindrome (5633883365).

The spelling of 4421532121 in words is "four billion, four hundred twenty-one million, five hundred thirty-two thousand, one hundred twenty-one".