21010311030330 has 96 divisors (see below), whose sum is σ = 56652149421504. Its totient is φ = 5602539384576.

The previous prime is 21010311030307. The next prime is 21010311030341. The reversal of 21010311030330 is 3303011301012.

It is a happy number.

21010311030330 is a `hidden beast` number, since 2 + 10 + 10 + 311 + 0 + 3 + 0 + 330 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71044149 + ... + 71339271.

It is an arithmetic number, because the mean of its divisors is an integer number (590126556474).

Almost surely, 2^{21010311030330} is an apocalyptic number.

21010311030330 is an abundant number, since it is smaller than the sum of its proper divisors (35641838391174).

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

21010311030330 is a wasteful number, since it uses less digits than its factorization.

21010311030330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324442 (or 324430 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21010311030330 its reverse (3303011301012), we get a palindrome (24313322331342).

The spelling of 21010311030330 in words is "twenty-one trillion, ten billion, three hundred eleven million, thirty thousand, three hundred thirty".