1000220123 has 16 divisors (see below), whose sum is σ = 1154334720. Its totient is φ = 848939616.

The previous prime is 1000220107. The next prime is 1000220161. The reversal of 1000220123 is 3210220001.

It is a happy number.

It is not a de Polignac number, because 1000220123 - 2⁴ = 1000220107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000220183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 757658 + ... + 758976.

It is an arithmetic number, because the mean of its divisors is an integer number (72145920).

Almost surely, 2^1000220123 is an apocalyptic number.

1000220123 is a deficient number, since it is larger than the sum of its proper divisors (154114597).

1000220123 is a wasteful number, since it uses less digits than its factorization.

1000220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2306.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1000220123 is about 31626.2568604000. The cubic root of 1000220123 is about 1000.0733689502.

Adding to 1000220123 its reverse (3210220001), we get a palindrome (4210440124).

The spelling of 1000220123 in words is "one billion, two hundred twenty thousand, one hundred twenty-three".