2123312122 has 4 divisors (see below), whose sum is σ = 3184968186. Its totient is φ = 1061656060.

The previous prime is 2123312099. The next prime is 2123312167. The reversal of 2123312122 is 2212133212.

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., 2113332841 + 9979281 = 45971^2 + 3159^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2123312122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530828029 + ... + 530828032.

Almost surely, 2^2123312122 is an apocalyptic number.

2123312122 is a deficient number, since it is larger than the sum of its proper divisors (1061656064).

2123312122 is a wasteful number, since it uses less digits than its factorization.

2123312122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061656063.

The product of its digits is 288, while the sum is 19.

The square root of 2123312122 is about 46079.4110422432. The cubic root of 2123312122 is about 1285.3003122531.

Adding to 2123312122 its reverse (2212133212), we get a palindrome (4335445334).

The spelling of 2123312122 in words is "two billion, one hundred twenty-three million, three hundred twelve thousand, one hundred twenty-two".