21023101330 has 64 divisors (see below), whose sum is σ = 47319697152. Its totient is φ = 6533130240.

The previous prime is 21023101321. The next prime is 21023101343. The reversal of 21023101330 is 3310132012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218982 + ... + 299998.

It is an arithmetic number, because the mean of its divisors is an integer number (739370268).

Almost surely, 2^21023101330 is an apocalyptic number.

21023101330 is an abundant number, since it is smaller than the sum of its proper divisors (26296595822).

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

21023101330 is a wasteful number, since it uses less digits than its factorization.

21023101330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81379.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21023101330 its reverse (3310132012), we get a palindrome (24333233342).

The spelling of 21023101330 in words is "twenty-one billion, twenty-three million, one hundred one thousand, three hundred thirty".