1000122312 has 32 divisors (see below), whose sum is σ = 2857492800. Its totient is φ = 285749184.

The previous prime is 1000122287. The next prime is 1000122313. The reversal of 1000122312 is 2132210001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1000122313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2976387 + ... + 2976722.

It is an arithmetic number, because the mean of its divisors is an integer number (89296650).

Almost surely, 2^1000122312 is an apocalyptic number.

1000122312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1000122312 is an abundant number, since it is smaller than the sum of its proper divisors (1857370488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000122312 is a wasteful number, since it uses less digits than its factorization.

1000122312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5953125 (or 5953121 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1000122312 is about 31624.7104650778. The cubic root of 1000122312 is about 1000.0407690045.

Adding to 1000122312 its reverse (2132210001), we get a palindrome (3132332313).

The spelling of 1000122312 in words is "one billion, one hundred twenty-two thousand, three hundred twelve".