4234210400021 has 4 divisors (see below), whose sum is σ = 4839097600032. Its totient is φ = 3629323200012.

The previous prime is 4234210399973. The next prime is 4234210400033. The reversal of 4234210400021 is 1200040124324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4234210400021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4234210400021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4234210400081) 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, 302443599995 + ... + 302443600008.

It is an arithmetic number, because the mean of its divisors is an integer number (1209774400008).

Almost surely, 2^{4234210400021} is an apocalyptic number.

It is an amenable number.

4234210400021 is a deficient number, since it is larger than the sum of its proper divisors (604887200011).

4234210400021 is an equidigital number, since it uses as much as digits as its factorization.

4234210400021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604887200010.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 4234210400021 its reverse (1200040124324), we get a palindrome (5434250524345).

The spelling of 4234210400021 in words is "four trillion, two hundred thirty-four billion, two hundred ten million, four hundred thousand, twenty-one".