2221386973 has 16 divisors (see below), whose sum is σ = 2420387200. Its totient is φ = 2026503360.

The previous prime is 2221386917. The next prime is 2221386997. The reversal of 2221386973 is 3796831222.

It is a cyclic number.

It is not a de Polignac number, because 2221386973 - 2²⁵ = 2187832541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221386473) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 620278 + ... + 623848.

It is an arithmetic number, because the mean of its divisors is an integer number (151274200).

Almost surely, 2^2221386973 is an apocalyptic number.

It is an amenable number.

2221386973 is a deficient number, since it is larger than the sum of its proper divisors (199000227).

2221386973 is a wasteful number, since it uses less digits than its factorization.

2221386973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4132.

The product of its digits is 217728, while the sum is 43.

The square root of 2221386973 is about 47131.5920906561. The cubic root of 2221386973 is about 1304.7923653939.

The spelling of 2221386973 in words is "two billion, two hundred twenty-one million, three hundred eighty-six thousand, nine hundred seventy-three".