4233421010021 has 4 divisors (see below), whose sum is σ = 4838195440032. Its totient is φ = 3628646580012.

The previous prime is 4233421009973. The next prime is 4233421010053. The reversal of 4233421010021 is 1200101243324.

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-4233421010021 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 (4233421010521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302387214995 + ... + 302387215008.

It is an arithmetic number, because the mean of its divisors is an integer number (1209548860008).

Almost surely, 2^{4233421010021} is an apocalyptic number.

It is an amenable number.

4233421010021 is a deficient number, since it is larger than the sum of its proper divisors (604774430011).

4233421010021 is an equidigital number, since it uses as much as digits as its factorization.

4233421010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604774430010.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 4233421010021 its reverse (1200101243324), we get a palindrome (5433522253345).

The spelling of 4233421010021 in words is "four trillion, two hundred thirty-three billion, four hundred twenty-one million, ten thousand, twenty-one".