2161102000 has 80 divisors (see below), whose sum is σ = 5235995232. Its totient is φ = 862713600.

The previous prime is 2161101997. The next prime is 2161102003. The reversal of 2161102000 is 2011612.

It is an interprime number because it is at equal distance from previous prime (2161101997) and next prime (2161102003).

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (2161102003) 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, 1573314 + ... + 1574686.

Almost surely, 2^2161102000 is an apocalyptic number.

2161102000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2161102000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2617997616).

2161102000 is an abundant number, since it is smaller than the sum of its proper divisors (3074893232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2161102000 is a wasteful number, since it uses less digits than its factorization.

2161102000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183 (or 2167 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2161102000 is about 46487.6542750868. The cubic root of 2161102000 is about 1292.8806087770.

Adding to 2161102000 its reverse (2011612), we get a palindrome (2163113612).

The spelling of 2161102000 in words is "two billion, one hundred sixty-one million, one hundred two thousand".