1322421100 has 216 divisors, whose sum is σ = 3885383264. Its totient is φ = 380160000.

The previous prime is 1322421059. The next prime is 1322421131. The reversal of 1322421100 is 11242231.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1100500 + ... + 1101700.

Almost surely, 2^1322421100 is an apocalyptic number.

1322421100 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 1322421100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1942691632).

1322421100 is an abundant number, since it is smaller than the sum of its proper divisors (2562962164).

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

1322421100 is a wasteful number, since it uses less digits than its factorization.

1322421100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257 (or 1239 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1322421100 is about 36365.1082770284. The cubic root of 1322421100 is about 1097.6315708204.

Adding to 1322421100 its reverse (11242231), we get a palindrome (1333663331).

The spelling of 1322421100 in words is "one billion, three hundred twenty-two million, four hundred twenty-one thousand, one hundred".