2122722 has 48 divisors (see below), whose sum is σ = 5571072. Its totient is φ = 570240.

The previous prime is 2122721. The next prime is 2122723. The reversal of 2122722 is 2272212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2122721) and next prime (2122723).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2122695 and 2122704.

It is not an unprimeable number, because it can be changed into a prime (2122721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1647 + ... + 2637.

It is an arithmetic number, because the mean of its divisors is an integer number (116064).

2^2122722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2122722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2785536).

2122722 is an abundant number, since it is smaller than the sum of its proper divisors (3448350).

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

2122722 is a wasteful number, since it uses less digits than its factorization.

2122722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023 (or 1020 counting only the distinct ones).

The product of its digits is 224, while the sum is 18.

The square root of 2122722 is about 1456.9564166440. The cubic root of 2122722 is about 128.5181228761.

Adding to 2122722 its reverse (2272212), we get a palindrome (4394934).

The spelling of 2122722 in words is "two million, one hundred twenty-two thousand, seven hundred twenty-two".