4221251330 has 16 divisors (see below), whose sum is σ = 7599292344. Its totient is φ = 1688269440.

The previous prime is 4221251323. The next prime is 4221251371. The reversal of 4221251330 is 331521224.

It can be written as a sum of positive squares in 4 ways, for example, as 2004442441 + 2216808889 = 44771^2 + 47083^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4221251296 and 4221251305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61214 + ... + 110406.

Almost surely, 2^4221251330 is an apocalyptic number.

4221251330 is a deficient number, since it is larger than the sum of its proper divisors (3378041014).

4221251330 is a wasteful number, since it uses less digits than its factorization.

4221251330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57781.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 4221251330 is about 64971.1576778496. The cubic root of 4221251330 is about 1616.1452997416.

Adding to 4221251330 its reverse (331521224), we get a palindrome (4552772554).

The spelling of 4221251330 in words is "four billion, two hundred twenty-one million, two hundred fifty-one thousand, three hundred thirty".