21010230123223 has 8 divisors (see below), whose sum is σ = 23234227086096. Its totient is φ = 18838562500800.

The previous prime is 21010230123167. The next prime is 21010230123247. The reversal of 21010230123223 is 32232103201012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21010230123223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21010230123194 and 21010230123203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010230120223) 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, 13082334268 + ... + 13082335873.

It is an arithmetic number, because the mean of its divisors is an integer number (2904278385762).

Almost surely, 2^{21010230123223} is an apocalyptic number.

21010230123223 is a deficient number, since it is larger than the sum of its proper divisors (2223996962873).

21010230123223 is a wasteful number, since it uses less digits than its factorization.

21010230123223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26164670225.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21010230123223 its reverse (32232103201012), we get a palindrome (53242333324235).

The spelling of 21010230123223 in words is "twenty-one trillion, ten billion, two hundred thirty million, one hundred twenty-three thousand, two hundred twenty-three".