1000012000023 has 24 divisors (see below), whose sum is σ = 1446290221376. Its totient is φ = 665831275200.

The previous prime is 1000011999971. The next prime is 1000012000063. The reversal of 1000012000023 is 3200002100001.

It is a happy number.

It is not a de Polignac number, because 1000012000023 - 2¹⁴ = 1000011983639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000011999969 and 1000012000014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000012000063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25916661 + ... + 25955217.

Almost surely, 2^{1000012000023} is an apocalyptic number.

1000012000023 is a deficient number, since it is larger than the sum of its proper divisors (446278221353).

1000012000023 is a wasteful number, since it uses less digits than its factorization.

1000012000023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42135 (or 42132 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 1000012000023 its reverse (3200002100001), we get a palindrome (4200014100024).

The spelling of 1000012000023 in words is "one trillion, twelve million, twenty-three", and thus it is an aban number and an uban number.