21213362311630 has 16 divisors (see below), whose sum is σ = 38996478803520. Its totient is φ = 8304805670752.

The previous prime is 21213362311619. The next prime is 21213362311633. The reversal of 21213362311630 is 3611326331212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213362311633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22567406245 + ... + 22567407184.

It is an arithmetic number, because the mean of its divisors is an integer number (2437279925220).

Almost surely, 2^{21213362311630} is an apocalyptic number.

21213362311630 is a deficient number, since it is larger than the sum of its proper divisors (17783116491890).

21213362311630 is a wasteful number, since it uses less digits than its factorization.

21213362311630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45134813483.

The product of its (nonzero) digits is 23328, while the sum is 34.

Adding to 21213362311630 its reverse (3611326331212), we get a palindrome (24824688642842).

The spelling of 21213362311630 in words is "twenty-one trillion, two hundred thirteen billion, three hundred sixty-two million, three hundred eleven thousand, six hundred thirty".