2162366021 has 2 divisors, whose sum is σ = 2162366022. Its totient is φ = 2162366020.

The previous prime is 2162365981. The next prime is 2162366047. The reversal of 2162366021 is 1206632612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2151568225 + 10797796 = 46385^2 + 3286^2 .

It is a cyclic number.

It is not a de Polignac number, because 2162366021 - 2⁶ = 2162365957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2162366071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081183010 + 1081183011.

It is an arithmetic number, because the mean of its divisors is an integer number (1081183011).

Almost surely, 2^2162366021 is an apocalyptic number.

It is an amenable number.

2162366021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2162366021 is an equidigital number, since it uses as much as digits as its factorization.

2162366021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 2162366021 is about 46501.2475208999. The cubic root of 2162366021 is about 1293.1326267637.

Adding to 2162366021 its reverse (1206632612), we get a palindrome (3368998633).

The spelling of 2162366021 in words is "two billion, one hundred sixty-two million, three hundred sixty-six thousand, twenty-one".