2105221470 has 128 divisors (see below), whose sum is σ = 5989662720. Its totient is φ = 467856000.

The previous prime is 2105221457. The next prime is 2105221471. The reversal of 2105221470 is 741225012.

It is a self number, because there is not a number n which added to its sum of digits gives 2105221470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105221471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 188955 + ... + 199785.

It is an arithmetic number, because the mean of its divisors is an integer number (46794240).

Almost surely, 2^2105221470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2105221470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2994831360).

2105221470 is an abundant number, since it is smaller than the sum of its proper divisors (3884441250).

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

2105221470 is a wasteful number, since it uses less digits than its factorization.

2105221470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10902.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 2105221470 is about 45882.6924885626. The cubic root of 2105221470 is about 1281.6396366585.

Adding to 2105221470 its reverse (741225012), we get a palindrome (2846446482).

The spelling of 2105221470 in words is "two billion, one hundred five million, two hundred twenty-one thousand, four hundred seventy".