1001000012 has 6 divisors (see below), whose sum is σ = 1751750028. Its totient is φ = 500500004.

The previous prime is 1000999949. The next prime is 1001000027. The reversal of 1001000012 is 2100001001.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125124998 + ... + 125125005.

It is an arithmetic number, because the mean of its divisors is an integer number (291958338).

Almost surely, 2^1001000012 is an apocalyptic number.

It is an amenable number.

1001000012 is a deficient number, since it is larger than the sum of its proper divisors (750750016).

1001000012 is a wasteful number, since it uses less digits than its factorization.

1001000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250250007 (or 250250005 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 1001000012 is about 31638.5842287546. The cubic root of 1001000012 is about 1000.3332262812. Note that the first 3 decimals are identical.

Adding to 1001000012 its reverse (2100001001), we get a palindrome (3101001013).

The spelling of 1001000012 in words is "one billion, one million, twelve", and thus it is an aban number and an uban number.