1022216800 has 144 divisors (see below), whose sum is σ = 2882909232. Its totient is φ = 349798400.

The previous prime is 1022216773. The next prime is 1022216801. The reversal of 1022216800 is 86122201.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022216801) 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, 146184 + ... + 153016.

It is an arithmetic number, because the mean of its divisors is an integer number (20020203).

Almost surely, 2^1022216800 is an apocalyptic number.

1022216800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022216800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1441454616).

1022216800 is an abundant number, since it is smaller than the sum of its proper divisors (1860692432).

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

1022216800 is a wasteful number, since it uses less digits than its factorization.

1022216800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6881 (or 6868 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1022216800 is about 31972.1253594440. The cubic root of 1022216800 is about 1007.3514241312.

The spelling of 1022216800 in words is "one billion, twenty-two million, two hundred sixteen thousand, eight hundred".