21202311122330 has 32 divisors (see below), whose sum is σ = 41100094698768. Its totient is φ = 7828501824000.

The previous prime is 21202311122159. The next prime is 21202311122371. The reversal of 21202311122330 is 3322111320212.

It can be written as a sum of positive squares in 8 ways, for example, as 10552485874681 + 10649825247649 = 3248459^2 + 3263407^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21202311122296 and 21202311122305.

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 15 ways as a sum of consecutive naturals, for example, 31346510 + ... + 32015750.

Almost surely, 2^{21202311122330} is an apocalyptic number.

21202311122330 is a deficient number, since it is larger than the sum of its proper divisors (19897783576438).

21202311122330 is a wasteful number, since it uses less digits than its factorization.

21202311122330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912962.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21202311122330 its reverse (3322111320212), we get a palindrome (24524422442542).

The spelling of 21202311122330 in words is "twenty-one trillion, two hundred two billion, three hundred eleven million, one hundred twenty-two thousand, three hundred thirty".