1322020000 has 360 divisors, whose sum is σ = 4038582240. Its totient is φ = 423360000.

The previous prime is 1322019983. The next prime is 1322020003. The reversal of 1322020000 is 202231.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322020003) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 18619965 + ... + 18620035.

It is an arithmetic number, because the mean of its divisors is an integer number (11218284).

Almost surely, 2^1322020000 is an apocalyptic number.

1322020000 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 1322020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2019291120).

1322020000 is an abundant number, since it is smaller than the sum of its proper divisors (2716562240).

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

1322020000 is an equidigital number, since it uses as much as digits as its factorization.

1322020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 1322020000 is about 36359.5929570175. The cubic root of 1322020000 is about 1097.5205863688.

Adding to 1322020000 its reverse (202231), we get a palindrome (1322222231).

The spelling of 1322020000 in words is "one billion, three hundred twenty-two million, twenty thousand".