21220111330 has 16 divisors (see below), whose sum is σ = 41668582464. Its totient is φ = 7716404080.

The previous prime is 21220111321. The next prime is 21220111337. The reversal of 21220111330 is 3311102212.

It is not an unprimeable number, because it can be changed into a prime (21220111337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96454942 + ... + 96455161.

It is an arithmetic number, because the mean of its divisors is an integer number (2604286404).

Almost surely, 2^21220111330 is an apocalyptic number.

21220111330 is a deficient number, since it is larger than the sum of its proper divisors (20448471134).

21220111330 is a wasteful number, since it uses less digits than its factorization.

21220111330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192910121.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21220111330 its reverse (3311102212), we get a palindrome (24531213542).

The spelling of 21220111330 in words is "twenty-one billion, two hundred twenty million, one hundred eleven thousand, three hundred thirty".