2162120669 has 2 divisors, whose sum is σ = 2162120670. Its totient is φ = 2162120668.

The previous prime is 2162120663. The next prime is 2162120677. The reversal of 2162120669 is 9660212612.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1968075769 + 194044900 = 44363^2 + 13930^2 .

It is a cyclic number.

It is not a de Polignac number, because 2162120669 - 2¹² = 2162116573 is a prime.

It is a super-2 number, since 2×2162120669² = 9349531574634015122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2162120663) 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 as a sum of consecutive naturals, namely, 1081060334 + 1081060335.

It is an arithmetic number, because the mean of its divisors is an integer number (1081060335).

Almost surely, 2^2162120669 is an apocalyptic number.

It is an amenable number.

2162120669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2162120669 is an equidigital number, since it uses as much as digits as its factorization.

2162120669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 2162120669 is about 46498.6093232905. The cubic root of 2162120669 is about 1293.0837166541.

The spelling of 2162120669 in words is "two billion, one hundred sixty-two million, one hundred twenty thousand, six hundred sixty-nine".