2113822 has 4 divisors (see below), whose sum is σ = 3170736. Its totient is φ = 1056910.

The previous prime is 2113819. The next prime is 2113823. The reversal of 2113822 is 2283112.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2113822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528454 + ... + 528457.

It is an arithmetic number, because the mean of its divisors is an integer number (792684).

2^2113822 is an apocalyptic number.

2113822 is a deficient number, since it is larger than the sum of its proper divisors (1056914).

2113822 is a wasteful number, since it uses less digits than its factorization.

2113822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056913.

The product of its digits is 192, while the sum is 19.

The square root of 2113822 is about 1453.8988960722. The cubic root of 2113822 is about 128.3382573400.

Adding to 2113822 its reverse (2283112), we get a palindrome (4396934).

The spelling of 2113822 in words is "two million, one hundred thirteen thousand, eight hundred twenty-two".