21230310203310 has 256 divisors, whose sum is σ = 56404671418368. Its totient is φ = 5081477068800.

The previous prime is 21230310203299. The next prime is 21230310203321. The reversal of 21230310203310 is 1330201303212.

It is an interprime number because it is at equal distance from previous prime (21230310203299) and next prime (21230310203321).

It is a super-2 number, since 2×21230310203310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4236738705 + ... + 4236743715.

It is an arithmetic number, because the mean of its divisors is an integer number (220330747728).

Almost surely, 2^{21230310203310} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21230310203310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28202335709184).

21230310203310 is an abundant number, since it is smaller than the sum of its proper divisors (35174361215058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21230310203310 is a wasteful number, since it uses less digits than its factorization.

21230310203310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6539.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21230310203310 its reverse (1330201303212), we get a palindrome (22560511506522).

The spelling of 21230310203310 in words is "twenty-one trillion, two hundred thirty billion, three hundred ten million, two hundred three thousand, three hundred ten".