2221060860 has 144 divisors (see below), whose sum is σ = 7172474400. Its totient is φ = 554729472.

The previous prime is 2221060799. The next prime is 2221060861. The reversal of 2221060860 is 680601222.

It is a super-2 number, since 2×2221060860² = 9866222687647879200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221060861) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 300732 + ... + 308028.

It is an arithmetic number, because the mean of its divisors is an integer number (49808850).

Almost surely, 2^2221060860 is an apocalyptic number.

2221060860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221060860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3586237200).

2221060860 is an abundant number, since it is smaller than the sum of its proper divisors (4951413540).

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

2221060860 is a wasteful number, since it uses less digits than its factorization.

2221060860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7420 (or 7415 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2221060860 is about 47128.1323627406. The cubic root of 2221060860 is about 1304.7285118073.

The spelling of 2221060860 in words is "two billion, two hundred twenty-one million, sixty thousand, eight hundred sixty".