2221222460 has 48 divisors (see below), whose sum is σ = 4737532800. Its totient is φ = 874658304.

The previous prime is 2221222459. The next prime is 2221222481. The reversal of 2221222460 is 642221222.

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, 587456 + ... + 591224.

It is an arithmetic number, because the mean of its divisors is an integer number (98698600).

Almost surely, 2^2221222460 is an apocalyptic number.

2221222460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221222460 is an abundant number, since it is smaller than the sum of its proper divisors (2516310340).

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

2221222460 is a wasteful number, since it uses less digits than its factorization.

2221222460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4230 (or 4228 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2221222460 is about 47129.8468064559. The cubic root of 2221222460 is about 1304.7601541961.

Adding to 2221222460 its reverse (642221222), we get a palindrome (2863443682).

The spelling of 2221222460 in words is "two billion, two hundred twenty-one million, two hundred twenty-two thousand, four hundred sixty".