421431121202999 has 4 divisors (see below), whose sum is σ = 421775709201936. Its totient is φ = 421086533204064.

The previous prime is 421431121202983. The next prime is 421431121203019. The reversal of 421431121202999 is 999202121134124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421431121202999 - 2⁴ = 421431121202983 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 (421431121202599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172293997634 + ... + 172294000079.

It is an arithmetic number, because the mean of its divisors is an integer number (105443927300484).

Almost surely, 2^{421431121202999} is an apocalyptic number.

421431121202999 is a deficient number, since it is larger than the sum of its proper divisors (344587998937).

421431121202999 is a wasteful number, since it uses less digits than its factorization.

421431121202999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344587998936.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 421431121202999 in words is "four hundred twenty-one trillion, four hundred thirty-one billion, one hundred twenty-one million, two hundred two thousand, nine hundred ninety-nine".