21234443303123 has 8 divisors (see below), whose sum is σ = 21595265204400. Its totient is φ = 20873651938048.

The previous prime is 21234443303107. The next prime is 21234443303191. The reversal of 21234443303123 is 32130334443212.

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 21234443303123 - 2⁴ = 21234443303107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21234443302123) 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, 6229286 + ... + 9015147.

It is an arithmetic number, because the mean of its divisors is an integer number (2699408150550).

Almost surely, 2^{21234443303123} is an apocalyptic number.

21234443303123 is a deficient number, since it is larger than the sum of its proper divisors (360821901277).

21234443303123 is a wasteful number, since it uses less digits than its factorization.

21234443303123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15268101.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 21234443303123 its reverse (32130334443212), we get a palindrome (53364777746335).

The spelling of 21234443303123 in words is "twenty-one trillion, two hundred thirty-four billion, four hundred forty-three million, three hundred three thousand, one hundred twenty-three".