1006662221123 has 4 divisors (see below), whose sum is σ = 1084097776608. Its totient is φ = 929226665640.

The previous prime is 1006662221113. The next prime is 1006662221177. The reversal of 1006662221123 is 3211222666001.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1006662221123 - 2⁸ = 1006662220867 is a prime.

It is a super-2 number, since 2×1006662221123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1006662221123.

It is not an unprimeable number, because it can be changed into a prime (1006662221113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38717777723 + ... + 38717777748.

It is an arithmetic number, because the mean of its divisors is an integer number (271024444152).

Almost surely, 2^{1006662221123} is an apocalyptic number.

1006662221123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1006662221123 is a deficient number, since it is larger than the sum of its proper divisors (77435555485).

1006662221123 is an equidigital number, since it uses as much as digits as its factorization.

1006662221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77435555484.

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 1006662221123 its reverse (3211222666001), we get a palindrome (4217884887124).

The spelling of 1006662221123 in words is "one trillion, six billion, six hundred sixty-two million, two hundred twenty-one thousand, one hundred twenty-three".