2123122 has 4 divisors (see below), whose sum is σ = 3184686. Its totient is φ = 1061560.

The previous prime is 2123087. The next prime is 2123123. The reversal of 2123122 is 2213212.

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

It can be written as a sum of positive squares in only one way, i.e., 2013561 + 109561 = 1419^2 + 331^2 .

It is not an unprimeable number, because it can be changed into a prime (2123123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530779 + ... + 530782.

2^2123122 is an apocalyptic number.

2123122 is a deficient number, since it is larger than the sum of its proper divisors (1061564).

2123122 is a wasteful number, since it uses less digits than its factorization.

2123122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061563.

The product of its digits is 48, while the sum is 13.

The square root of 2123122 is about 1457.0936826436. The cubic root of 2123122 is about 128.5261949050.

Adding to 2123122 its reverse (2213212), we get a palindrome (4336334).

The spelling of 2123122 in words is "two million, one hundred twenty-three thousand, one hundred twenty-two".