12403140433021 has 24 divisors (see below), whose sum is σ = 13986555054336. Its totient is φ = 10981677208320.

The previous prime is 12403140433001. The next prime is 12403140433031. The reversal of 12403140433021 is 12033404130421.

It is a happy number.

It is not a de Polignac number, because 12403140433021 - 2⁵ = 12403140432989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403140433001) 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, 9883495 + ... + 11067508.

It is an arithmetic number, because the mean of its divisors is an integer number (582773127264).

Almost surely, 2^{12403140433021} is an apocalyptic number.

It is an amenable number.

12403140433021 is a deficient number, since it is larger than the sum of its proper divisors (1583414621315).

12403140433021 is a wasteful number, since it uses less digits than its factorization.

12403140433021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20951173 (or 20951160 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 12403140433021 its reverse (12033404130421), we get a palindrome (24436544563442).

The spelling of 12403140433021 in words is "twelve trillion, four hundred three billion, one hundred forty million, four hundred thirty-three thousand, twenty-one".