4223212134221 has 8 divisors (see below), whose sum is σ = 4359488077824. Its totient is φ = 4086938896560.

The previous prime is 4223212134187. The next prime is 4223212134223. The reversal of 4223212134221 is 1224312123224.

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 4223212134221 - 2⁶ = 4223212134157 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 (4223212134223) 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, 2774891 + ... + 4018263.

It is an arithmetic number, because the mean of its divisors is an integer number (544936009728).

Almost surely, 2^{4223212134221} is an apocalyptic number.

It is an amenable number.

4223212134221 is a deficient number, since it is larger than the sum of its proper divisors (136275943603).

4223212134221 is a wasteful number, since it uses less digits than its factorization.

4223212134221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352971.

The product of its digits is 9216, while the sum is 29.

Adding to 4223212134221 its reverse (1224312123224), we get a palindrome (5447524257445).

The spelling of 4223212134221 in words is "four trillion, two hundred twenty-three billion, two hundred twelve million, one hundred thirty-four thousand, two hundred twenty-one".