7248221109 has 6 divisors (see below), whose sum is σ = 10469652726. Its totient is φ = 4832147400.

The previous prime is 7248221093. The next prime is 7248221147. The reversal of 7248221109 is 9011228427.

7248221109 is a `hidden beast` number, since 72 + 482 + 2 + 1 + 109 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7182562500 + 65658609 = 84750^2 + 8103^2 .

It is not a de Polignac number, because 7248221109 - 2⁴ = 7248221093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7248221159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 402678942 + ... + 402678959.

It is an arithmetic number, because the mean of its divisors is an integer number (1744942121).

Almost surely, 2^7248221109 is an apocalyptic number.

It is an amenable number.

7248221109 is a deficient number, since it is larger than the sum of its proper divisors (3221431617).

7248221109 is a wasteful number, since it uses less digits than its factorization.

7248221109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805357907 (or 805357904 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 7248221109 is about 85136.4851811490. The cubic root of 7248221109 is about 1935.2800115581.

The spelling of 7248221109 in words is "seven billion, two hundred forty-eight million, two hundred twenty-one thousand, one hundred nine".