2221866670 has 32 divisors (see below), whose sum is σ = 4112228736. Its totient is φ = 863827200.

The previous prime is 2221866659. The next prime is 2221866679. The reversal of 2221866670 is 766681222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221866679) 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 15 ways as a sum of consecutive naturals, for example, 101112 + ... + 121108.

It is an arithmetic number, because the mean of its divisors is an integer number (128507148).

Almost surely, 2^2221866670 is an apocalyptic number.

2221866670 is a deficient number, since it is larger than the sum of its proper divisors (1890362066).

2221866670 is a wasteful number, since it uses less digits than its factorization.

2221866670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20316.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 2221866670 is about 47136.6807274335. The cubic root of 2221866670 is about 1304.8862796830.

It can be divided in two parts, 22218 and 66670, that added together give a palindrome (88888).

The spelling of 2221866670 in words is "two billion, two hundred twenty-one million, eight hundred sixty-six thousand, six hundred seventy".