21002410234223 has 16 divisors (see below), whose sum is σ = 23133288074400. Its totient is φ = 18908735354880.

The previous prime is 21002410234187. The next prime is 21002410234243. The reversal of 21002410234223 is 32243201420012.

It is a cyclic number.

It is not a de Polignac number, because 21002410234223 - 2²⁰ = 21002409185647 is a prime.

It is a super-2 number, since 2×21002410234223² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21002410234192 and 21002410234201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002410234243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5346458 + ... + 8401751.

It is an arithmetic number, because the mean of its divisors is an integer number (1445830504650).

Almost surely, 2^{21002410234223} is an apocalyptic number.

21002410234223 is a deficient number, since it is larger than the sum of its proper divisors (2130877840177).

21002410234223 is a wasteful number, since it uses less digits than its factorization.

21002410234223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13749562.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21002410234223 its reverse (32243201420012), we get a palindrome (53245611654235).

The spelling of 21002410234223 in words is "twenty-one trillion, two billion, four hundred ten million, two hundred thirty-four thousand, two hundred twenty-three".