2101230 has 48 divisors (see below), whose sum is σ = 5619744. Its totient is φ = 544320.

The previous prime is 2101223. The next prime is 2101237. The reversal of 2101230 is 321012.

It is a happy number.

2101230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2101223) and next prime (2101237).

It is a Harshad number since it is a multiple of its sum of digits (9).

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101237) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3015 + ... + 3645.

It is an arithmetic number, because the mean of its divisors is an integer number (117078).

2^2101230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2809872).

2101230 is an abundant number, since it is smaller than the sum of its proper divisors (3518514).

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

2101230 is a wasteful number, since it uses less digits than its factorization.

2101230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2101230 is about 1449.5620028133. The cubic root of 2101230 is about 128.0829134027.

Adding to 2101230 its reverse (321012), we get a palindrome (2422242).

The spelling of 2101230 in words is "two million, one hundred one thousand, two hundred thirty".