2161012 has 24 divisors (see below), whose sum is σ = 4366656. Its totient is φ = 916608.

The previous prime is 2161007. The next prime is 2161031. The reversal of 2161012 is 2101612.

2161012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 2160983 and 2161001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2823 + ... + 3505.

It is an arithmetic number, because the mean of its divisors is an integer number (181944).

2^2161012 is an apocalyptic number.

It is an amenable number.

2161012 is an abundant number, since it is smaller than the sum of its proper divisors (2205644).

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

2161012 is a wasteful number, since it uses less digits than its factorization.

2161012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807 (or 805 counting only the distinct ones).

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

The square root of 2161012 is about 1470.0380947445. The cubic root of 2161012 is about 129.2862661009.

Adding to 2161012 its reverse (2101612), we get a palindrome (4262624).

The spelling of 2161012 in words is "two million, one hundred sixty-one thousand, twelve".