1228216822 has 32 divisors (see below), whose sum is σ = 2144487744. Its totient is φ = 516672000.

The previous prime is 1228216811. The next prime is 1228216837. The reversal of 1228216822 is 2286128221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512058 + ... + 514450.

It is an arithmetic number, because the mean of its divisors is an integer number (67015242).

Almost surely, 2^1228216822 is an apocalyptic number.

1228216822 is a deficient number, since it is larger than the sum of its proper divisors (916270922).

1228216822 is a wasteful number, since it uses less digits than its factorization.

1228216822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3064.

The product of its digits is 12288, while the sum is 34.

The square root of 1228216822 is about 35045.9244706143. The cubic root of 1228216822 is about 1070.9232494955.

The spelling of 1228216822 in words is "one billion, two hundred twenty-eight million, two hundred sixteen thousand, eight hundred twenty-two".