2165420330203 has 8 divisors (see below), whose sum is σ = 2343709676000. Its totient is φ = 1988805063168.

The previous prime is 2165420330191. The next prime is 2165420330221. The reversal of 2165420330203 is 3020330245612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2165420330203 - 2²¹ = 2165418233051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2165420330263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418516998 + ... + 418522171.

It is an arithmetic number, because the mean of its divisors is an integer number (292963709500).

Almost surely, 2^{2165420330203} is an apocalyptic number.

2165420330203 is a deficient number, since it is larger than the sum of its proper divisors (178289345797).

2165420330203 is a wasteful number, since it uses less digits than its factorization.

2165420330203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837039381.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 2165420330203 its reverse (3020330245612), we get a palindrome (5185750575815).

The spelling of 2165420330203 in words is "two trillion, one hundred sixty-five billion, four hundred twenty million, three hundred thirty thousand, two hundred three".