2238947121 has 16 divisors (see below), whose sum is σ = 3116160000. Its totient is φ = 1427228880.

The previous prime is 2238947119. The next prime is 2238947129. The reversal of 2238947121 is 1217498322.

It is not a de Polignac number, because 2238947121 - 2¹ = 2238947119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2238947121.

It is not an unprimeable number, because it can be changed into a prime (2238947129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341686 + ... + 348176.

It is an arithmetic number, because the mean of its divisors is an integer number (194760000).

Almost surely, 2^2238947121 is an apocalyptic number.

It is an amenable number.

2238947121 is a deficient number, since it is larger than the sum of its proper divisors (877212879).

2238947121 is a wasteful number, since it uses less digits than its factorization.

2238947121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11516.

The product of its digits is 48384, while the sum is 39.

The square root of 2238947121 is about 47317.5138928494. The cubic root of 2238947121 is about 1308.2214897437.

The spelling of 2238947121 in words is "two billion, two hundred thirty-eight million, nine hundred forty-seven thousand, one hundred twenty-one".