21321222310330 has 32 divisors (see below), whose sum is σ = 39743857669824. Its totient is φ = 8229788681856.

The previous prime is 21321222310307. The next prime is 21321222310331. The reversal of 21321222310330 is 3301322212312.

It is a junction number, because it is equal to n+sod(n) for n = 21321222310295 and 21321222310304.

It is not an unprimeable number, because it can be changed into a prime (21321222310331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298664539 + ... + 298735918.

It is an arithmetic number, because the mean of its divisors is an integer number (1241995552182).

Almost surely, 2^{21321222310330} is an apocalyptic number.

21321222310330 is a deficient number, since it is larger than the sum of its proper divisors (18422635359494).

21321222310330 is a wasteful number, since it uses less digits than its factorization.

21321222310330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597400590.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21321222310330 its reverse (3301322212312), we get a palindrome (24622544522642).

The spelling of 21321222310330 in words is "twenty-one trillion, three hundred twenty-one billion, two hundred twenty-two million, three hundred ten thousand, three hundred thirty".