2221123110 has 32 divisors (see below), whose sum is σ = 5562466560. Its totient is φ = 566547168.

The previous prime is 2221123109. The next prime is 2221123127. The reversal of 2221123110 is 113211222.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2221123110.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1608820 + ... + 1610199.

It is an arithmetic number, because the mean of its divisors is an integer number (173827080).

Almost surely, 2^2221123110 is an apocalyptic number.

2221123110 is an abundant number, since it is smaller than the sum of its proper divisors (3341343450).

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

2221123110 is a wasteful number, since it uses less digits than its factorization.

2221123110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3219052.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2221123110 is about 47128.7927916682. The cubic root of 2221123110 is about 1304.7407009661.

Adding to 2221123110 its reverse (113211222), we get a palindrome (2334334332).

The spelling of 2221123110 in words is "two billion, two hundred twenty-one million, one hundred twenty-three thousand, one hundred ten".