1822221822 has 16 divisors (see below), whose sum is σ = 3679827840. Its totient is φ = 601509912.

The previous prime is 1822221773. The next prime is 1822221827. The reversal of 1822221822 is 2281222281.

It is a self number, because there is not a number n which added to its sum of digits gives 1822221822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1822221827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1473672 + ... + 1474907.

It is an arithmetic number, because the mean of its divisors is an integer number (229989240).

Almost surely, 2^1822221822 is an apocalyptic number.

1822221822 is an abundant number, since it is smaller than the sum of its proper divisors (1857606018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1822221822 is a wasteful number, since it uses less digits than its factorization.

1822221822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948687.

The product of its digits is 4096, while the sum is 30.

The square root of 1822221822 is about 42687.4902284030. The cubic root of 1822221822 is about 1221.4257768764.

The spelling of 1822221822 in words is "one billion, eight hundred twenty-two million, two hundred twenty-one thousand, eight hundred twenty-two".