1322020220 has 48 divisors (see below), whose sum is σ = 2904975360. Its totient is φ = 504415296.

The previous prime is 1322020211. The next prime is 1322020229. The reversal of 1322020220 is 220202231.

It is an interprime number because it is at equal distance from previous prime (1322020211) and next prime (1322020229).

It is a junction number, because it is equal to n+sod(n) for n = 1322020195 and 1322020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322020229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170549 + ... + 178131.

It is an arithmetic number, because the mean of its divisors is an integer number (60520320).

Almost surely, 2^1322020220 is an apocalyptic number.

1322020220 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 1322020220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1452487680).

1322020220 is an abundant number, since it is smaller than the sum of its proper divisors (1582955140).

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

1322020220 is a wasteful number, since it uses less digits than its factorization.

1322020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7994 (or 7992 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1322020220 is about 36359.5959823538. The cubic root of 1322020220 is about 1097.5206472490.

Adding to 1322020220 its reverse (220202231), we get a palindrome (1542222451).

The spelling of 1322020220 in words is "one billion, three hundred twenty-two million, twenty thousand, two hundred twenty".