2162120687 has 2 divisors, whose sum is σ = 2162120688. Its totient is φ = 2162120686.

The previous prime is 2162120677. The next prime is 2162120693. The reversal of 2162120687 is 7860212612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2162120687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2162120677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081060343 + 1081060344.

It is an arithmetic number, because the mean of its divisors is an integer number (1081060344).

Almost surely, 2^2162120687 is an apocalyptic number.

2162120687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2162120687 is an equidigital number, since it uses as much as digits as its factorization.

2162120687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 2162120687 is about 46498.6095168447. The cubic root of 2162120687 is about 1293.0837202425.

The spelling of 2162120687 in words is "two billion, one hundred sixty-two million, one hundred twenty thousand, six hundred eighty-seven".