2101440210 has 32 divisors (see below), whose sum is σ = 5340131712. Its totient is φ = 527420160.

The previous prime is 2101440181. The next prime is 2101440217. The reversal of 2101440210 is 120441012.

It is a super-3 number, since 3×2101440210³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101440210.

It is not an unprimeable number, because it can be changed into a prime (2101440217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2059726 + ... + 2060745.

It is an arithmetic number, because the mean of its divisors is an integer number (166879116).

Almost surely, 2^2101440210 is an apocalyptic number.

2101440210 is an abundant number, since it is smaller than the sum of its proper divisors (3238691502).

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

2101440210 is a wasteful number, since it uses less digits than its factorization.

2101440210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4120498.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2101440210 is about 45841.4682356488. The cubic root of 2101440210 is about 1280.8718445849.

Adding to 2101440210 its reverse (120441012), we get a palindrome (2221881222).

The spelling of 2101440210 in words is "two billion, one hundred one million, four hundred forty thousand, two hundred ten".