12354403040021 has 8 divisors (see below), whose sum is σ = 14127942890880. Its totient is φ = 10583019471888.

The previous prime is 12354403039961. The next prime is 12354403040033. The reversal of 12354403040021 is 12004030445321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12354403040021 - 2²² = 12354398845717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12354403040921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539058401 + ... + 539081318.

It is an arithmetic number, because the mean of its divisors is an integer number (1765992861360).

Almost surely, 2^{12354403040021} is an apocalyptic number.

It is an amenable number.

12354403040021 is a deficient number, since it is larger than the sum of its proper divisors (1773539850859).

12354403040021 is a wasteful number, since it uses less digits than its factorization.

12354403040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078141363.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 12354403040021 its reverse (12004030445321), we get a palindrome (24358433485342).

The spelling of 12354403040021 in words is "twelve trillion, three hundred fifty-four billion, four hundred three million, forty thousand, twenty-one".