2221729222 has 8 divisors (see below), whose sum is σ = 3332829456. Its totient is φ = 1110786072.

The previous prime is 2221729189. The next prime is 2221729243. The reversal of 2221729222 is 2229271222.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6988 + ... + 67024.

It is an arithmetic number, because the mean of its divisors is an integer number (416603682).

Almost surely, 2^2221729222 is an apocalyptic number.

2221729222 is a deficient number, since it is larger than the sum of its proper divisors (1111100234).

2221729222 is a wasteful number, since it uses less digits than its factorization.

2221729222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78542.

The product of its digits is 8064, while the sum is 31.

The square root of 2221729222 is about 47135.2227320504. Note that the first 3 decimals coincide. The cubic root of 2221729222 is about 1304.8593717216.

The spelling of 2221729222 in words is "two billion, two hundred twenty-one million, seven hundred twenty-nine thousand, two hundred twenty-two".