4651221332 has 12 divisors (see below), whose sum is σ = 8312821440. Its totient is φ = 2276129496.

The previous prime is 4651221331. The next prime is 4651221359. The reversal of 4651221332 is 2331221564.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4651221295 and 4651221304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4651221331) 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, 12370082 + ... + 12370457.

It is an arithmetic number, because the mean of its divisors is an integer number (692735120).

Almost surely, 2^4651221332 is an apocalyptic number.

It is an amenable number.

4651221332 is a deficient number, since it is larger than the sum of its proper divisors (3661600108).

4651221332 is a wasteful number, since it uses less digits than its factorization.

4651221332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24740590 (or 24740588 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 4651221332 is about 68199.8631376926. The cubic root of 4651221332 is about 1669.2536533734.

Adding to 4651221332 its reverse (2331221564), we get a palindrome (6982442896).

The spelling of 4651221332 in words is "four billion, six hundred fifty-one million, two hundred twenty-one thousand, three hundred thirty-two".