21202011330 has 16 divisors (see below), whose sum is σ = 50884827264. Its totient is φ = 5653869680.

The previous prime is 21202011287. The next prime is 21202011343. The reversal of 21202011330 is 3311020212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353366826 + ... + 353366885.

It is an arithmetic number, because the mean of its divisors is an integer number (3180301704).

Almost surely, 2^21202011330 is an apocalyptic number.

21202011330 is an abundant number, since it is smaller than the sum of its proper divisors (29682815934).

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

21202011330 is a wasteful number, since it uses less digits than its factorization.

21202011330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706733721.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21202011330 its reverse (3311020212), we get a palindrome (24513031542).

The spelling of 21202011330 in words is "twenty-one billion, two hundred two million, eleven thousand, three hundred thirty".