21220022302 has 16 divisors (see below), whose sum is σ = 34029601632. Its totient is φ = 9888940800.

The previous prime is 21220022261. The next prime is 21220022321. The reversal of 21220022302 is 20322002212.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3026199 + ... + 3033202.

It is an arithmetic number, because the mean of its divisors is an integer number (2126850102).

Almost surely, 2^21220022302 is an apocalyptic number.

21220022302 is a deficient number, since it is larger than the sum of its proper divisors (12809579330).

21220022302 is a wasteful number, since it uses less digits than its factorization.

21220022302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6059523.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 21220022302 its reverse (20322002212), we get a palindrome (41542024514).

The spelling of 21220022302 in words is "twenty-one billion, two hundred twenty million, twenty-two thousand, three hundred two".