2221775493 has 24 divisors (see below), whose sum is σ = 3519349632. Its totient is φ = 1242569664.

The previous prime is 2221775473. The next prime is 2221775497. The reversal of 2221775493 is 3945771222.

It is not a de Polignac number, because 2221775493 - 2¹⁷ = 2221644421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221775497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153880 + ... + 167697.

It is an arithmetic number, because the mean of its divisors is an integer number (146639568).

Almost surely, 2^2221775493 is an apocalyptic number.

It is an amenable number.

2221775493 is a deficient number, since it is larger than the sum of its proper divisors (1297574139).

2221775493 is a wasteful number, since it uses less digits than its factorization.

2221775493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321641 (or 321634 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 2221775493 is about 47135.7135620116. The cubic root of 2221775493 is about 1304.8684302406.

The spelling of 2221775493 in words is "two billion, two hundred twenty-one million, seven hundred seventy-five thousand, four hundred ninety-three".