21321131122330 has 64 divisors (see below), whose sum is σ = 42452569111680. Its totient is φ = 7658685229824.

The previous prime is 21321131122301. The next prime is 21321131122381. The reversal of 21321131122330 is 3322113112312.

It is a junction number, because it is equal to n+sod(n) for n = 21321131122295 and 21321131122304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38488777 + ... + 39038803.

It is an arithmetic number, because the mean of its divisors is an integer number (663321392370).

Almost surely, 2^{21321131122330} is an apocalyptic number.

21321131122330 is a deficient number, since it is larger than the sum of its proper divisors (21131437989350).

21321131122330 is a wasteful number, since it uses less digits than its factorization.

21321131122330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558143.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21321131122330 its reverse (3322113112312), we get a palindrome (24643244234642).

The spelling of 21321131122330 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred thirty-one million, one hundred twenty-two thousand, three hundred thirty".