2221128662 has 8 divisors (see below), whose sum is σ = 3350951856. Its totient is φ = 1104144712.

The previous prime is 2221128617. The next prime is 2221128697. The reversal of 2221128662 is 2668211222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3209378 + ... + 3210069.

It is an arithmetic number, because the mean of its divisors is an integer number (418868982).

Almost surely, 2^2221128662 is an apocalyptic number.

2221128662 is a deficient number, since it is larger than the sum of its proper divisors (1129823194).

2221128662 is a wasteful number, since it uses less digits than its factorization.

2221128662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6419622.

The product of its digits is 9216, while the sum is 32.

The square root of 2221128662 is about 47128.8516940526. The cubic root of 2221128662 is about 1304.7417880910.

Adding to 2221128662 its reverse (2668211222), we get a palindrome (4889339884).

The spelling of 2221128662 in words is "two billion, two hundred twenty-one million, one hundred twenty-eight thousand, six hundred sixty-two".