27221030724 has 12 divisors (see below), whose sum is σ = 63515738384. Its totient is φ = 9073676904.

The previous prime is 27221030693. The next prime is 27221030731. The reversal of 27221030724 is 42703012272.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 27221030691 and 27221030700.

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, 1134209602 + ... + 1134209625.

Almost surely, 2^27221030724 is an apocalyptic number.

It is an amenable number.

27221030724 is an abundant number, since it is smaller than the sum of its proper divisors (36294707660).

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

27221030724 is a wasteful number, since it uses less digits than its factorization.

27221030724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268419234 (or 2268419232 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

Adding to 27221030724 its reverse (42703012272), we get a palindrome (69924042996).

The spelling of 27221030724 in words is "twenty-seven billion, two hundred twenty-one million, thirty thousand, seven hundred twenty-four".