1012166066 has 4 divisors (see below), whose sum is σ = 1518249102. Its totient is φ = 506083032.

The previous prime is 1012166059. The next prime is 1012166093. The reversal of 1012166066 is 6606612101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6606612101 = 101 ⋅65412001.

It can be written as a sum of positive squares in only one way, i.e., 611325625 + 400840441 = 24725^2 + 20021^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253041515 + ... + 253041518.

Almost surely, 2^1012166066 is an apocalyptic number.

1012166066 is a deficient number, since it is larger than the sum of its proper divisors (506083036).

1012166066 is an equidigital number, since it uses as much as digits as its factorization.

1012166066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506083035.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1012166066 is about 31814.5574540964. The cubic root of 1012166066 is about 1004.0390196895.

Adding to 1012166066 its reverse (6606612101), we get a palindrome (7618778167).

The spelling of 1012166066 in words is "one billion, twelve million, one hundred sixty-six thousand, sixty-six".