1001224209 has 16 divisors (see below), whose sum is σ = 1406396480. Its totient is φ = 631825920.

The previous prime is 1001224207. The next prime is 1001224243. The reversal of 1001224209 is 9024221001.

It is not a de Polignac number, because 1001224209 - 2¹ = 1001224207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001224207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68649 + ... + 81945.

It is an arithmetic number, because the mean of its divisors is an integer number (87899780).

Almost surely, 2^1001224209 is an apocalyptic number.

1001224209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1001224209 is a deficient number, since it is larger than the sum of its proper divisors (405172271).

1001224209 is a wasteful number, since it uses less digits than its factorization.

1001224209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14640.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1001224209 is about 31642.1271250844. The cubic root of 1001224209 is about 1000.4079032590.

The spelling of 1001224209 in words is "one billion, one million, two hundred twenty-four thousand, two hundred nine".