2161117324 has 6 divisors (see below), whose sum is σ = 3781955324. Its totient is φ = 1080558660.

The previous prime is 2161117319. The next prime is 2161117327. The reversal of 2161117324 is 4237111612.

It is a junction number, because it is equal to n+sod(n) for n = 2161117292 and 2161117301.

It is not an unprimeable number, because it can be changed into a prime (2161117327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270139662 + ... + 270139669.

Almost surely, 2^2161117324 is an apocalyptic number.

It is an amenable number.

2161117324 is a deficient number, since it is larger than the sum of its proper divisors (1620838000).

2161117324 is a wasteful number, since it uses less digits than its factorization.

2161117324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540279335 (or 540279333 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 2161117324 is about 46487.8190927473. The cubic root of 2161117324 is about 1292.8836646339.

Adding to 2161117324 its reverse (4237111612), we get a palindrome (6398228936).

The spelling of 2161117324 in words is "two billion, one hundred sixty-one million, one hundred seventeen thousand, three hundred twenty-four".