21214312044223 has 8 divisors (see below), whose sum is σ = 21792806959088. Its totient is φ = 20636087399424.

The previous prime is 21214312044199. The next prime is 21214312044269. The reversal of 21214312044223 is 32244021341212.

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 21214312044223 - 2⁹ = 21214312043711 is a prime.

It is a super-2 number, since 2×21214312044223² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214312042223) 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, 67408386 + ... + 67722367.

It is an arithmetic number, because the mean of its divisors is an integer number (2724100869886).

Almost surely, 2^{21214312044223} is an apocalyptic number.

21214312044223 is a deficient number, since it is larger than the sum of its proper divisors (578494914865).

21214312044223 is a wasteful number, since it uses less digits than its factorization.

21214312044223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135135033.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 21214312044223 its reverse (32244021341212), we get a palindrome (53458333385435).

The spelling of 21214312044223 in words is "twenty-one trillion, two hundred fourteen billion, three hundred twelve million, forty-four thousand, two hundred twenty-three".