1322223100 has 144 divisors (see below), whose sum is σ = 3270103200. Its totient is φ = 459648000.

The previous prime is 1322223073. The next prime is 1322223101. The reversal of 1322223100 is 13222231.

It is a super-2 number, since 2×1322223100² = 3496547852347220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322223101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5773786 + ... + 5774014.

It is an arithmetic number, because the mean of its divisors is an integer number (22709050).

Almost surely, 2^1322223100 is an apocalyptic number.

1322223100 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 1322223100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1635051600).

1322223100 is an abundant number, since it is smaller than the sum of its proper divisors (1947880100).

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

1322223100 is a wasteful number, since it uses less digits than its factorization.

1322223100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1322223100 is about 36362.3857853139. The cubic root of 1322223100 is about 1097.5767869853.

Adding to 1322223100 its reverse (13222231), we get a palindrome (1335445331).

1322223100 divided by its reverse (13222231) gives a square (100 = 10²).

It can be divided in two parts, 1322 and 223100, that added together give a palindrome (224422).

The spelling of 1322223100 in words is "one billion, three hundred twenty-two million, two hundred twenty-three thousand, one hundred".