30221130440 has 16 divisors (see below), whose sum is σ = 67997543580. Its totient is φ = 12088452160.

The previous prime is 30221130437. The next prime is 30221130473. The reversal of 30221130440 is 4403112203.

It can be written as a sum of positive squares in 2 ways, for example, as 29569553764 + 651576676 = 171958^2 + 25526^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377764091 + ... + 377764170.

Almost surely, 2^30221130440 is an apocalyptic number.

It is an amenable number.

30221130440 is an abundant number, since it is smaller than the sum of its proper divisors (37776413140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30221130440 is a wasteful number, since it uses less digits than its factorization.

30221130440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755528272 (or 755528268 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30221130440 its reverse (4403112203), we get a palindrome (34624242643).

The spelling of 30221130440 in words is "thirty billion, two hundred twenty-one million, one hundred thirty thousand, four hundred forty".