2122122169 has 4 divisors (see below), whose sum is σ = 2125257444. Its totient is φ = 2118986896.

The previous prime is 2122122137. The next prime is 2122122221. The reversal of 2122122169 is 9612212212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2057801769 + 64320400 = 45363^2 + 8020^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122122169 - 2⁵ = 2122122137 is a prime.

It is a super-2 number, since 2×2122122169² = 9006805000322529122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122122109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1566622 + ... + 1567975.

It is an arithmetic number, because the mean of its divisors is an integer number (531314361).

Almost surely, 2^2122122169 is an apocalyptic number.

It is an amenable number.

2122122169 is a deficient number, since it is larger than the sum of its proper divisors (3135275).

2122122169 is an equidigital number, since it uses as much as digits as its factorization.

2122122169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135274.

The product of its digits is 1728, while the sum is 28.

The square root of 2122122169 is about 46066.4972512563. The cubic root of 2122122169 is about 1285.0601634233.

The spelling of 2122122169 in words is "two billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred sixty-nine".