1022220444 has 96 divisors (see below), whose sum is σ = 2881267200. Its totient is φ = 275546880.

The previous prime is 1022220427. The next prime is 1022220457. The reversal of 1022220444 is 4440222201.

It is a super-3 number, since 3×1022220444³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1022220444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 428134 + ... + 430514.

It is an arithmetic number, because the mean of its divisors is an integer number (30013200).

Almost surely, 2^1022220444 is an apocalyptic number.

1022220444 is a gapful number since it is divisible by the number (14) 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 1022220444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1440633600).

1022220444 is an abundant number, since it is smaller than the sum of its proper divisors (1859046756).

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

1022220444 is a wasteful number, since it uses less digits than its factorization.

1022220444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683 (or 2681 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 1022220444 is about 31972.1823465337. The cubic root of 1022220444 is about 1007.3526211324.

Adding to 1022220444 its reverse (4440222201), we get a palindrome (5462442645).

The spelling of 1022220444 in words is "one billion, twenty-two million, two hundred twenty thousand, four hundred forty-four".