2122320 has 80 divisors (see below), whose sum is σ = 6785280. Its totient is φ = 548352.

The previous prime is 2122303. The next prime is 2122321. The reversal of 2122320 is 232212.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2122296 and 2122305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122321) 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, 8761 + ... + 8999.

It is an arithmetic number, because the mean of its divisors is an integer number (84816).

2^2122320 is an apocalyptic number.

2122320 is a gapful number since it is divisible by the number (20) 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 2122320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3392640).

2122320 is an abundant number, since it is smaller than the sum of its proper divisors (4662960).

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

2122320 is a wasteful number, since it uses less digits than its factorization.

2122320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2122320 is about 1456.8184512835. The cubic root of 2122320 is about 128.5100094652.

Adding to 2122320 its reverse (232212), we get a palindrome (2354532).

It can be divided in two parts, 2122 and 320, that added together give a palindrome (2442).

The spelling of 2122320 in words is "two million, one hundred twenty-two thousand, three hundred twenty".