2162171066 has 16 divisors (see below), whose sum is σ = 3582887040. Its totient is φ = 970363680.

The previous prime is 2162171057. The next prime is 2162171071. The reversal of 2162171066 is 6601712612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620291 + ... + 623766.

It is an arithmetic number, because the mean of its divisors is an integer number (223930440).

Almost surely, 2^2162171066 is an apocalyptic number.

2162171066 is a deficient number, since it is larger than the sum of its proper divisors (1420715974).

2162171066 is a wasteful number, since it uses less digits than its factorization.

2162171066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244149.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 2162171066 is about 46499.1512395657. The cubic root of 2162171066 is about 1293.0937634313.

Adding to 2162171066 its reverse (6601712612), we get a palindrome (8763883678).

The spelling of 2162171066 in words is "two billion, one hundred sixty-two million, one hundred seventy-one thousand, sixty-six".