21323213332210 has 64 divisors (see below), whose sum is σ = 39184839936000. Its totient is φ = 8352670689792.

The previous prime is 21323213332189. The next prime is 21323213332219. The reversal of 21323213332210 is 1223331232312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21323213332219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69431112 + ... + 69737548.

It is an arithmetic number, because the mean of its divisors is an integer number (612263124000).

Almost surely, 2^{21323213332210} is an apocalyptic number.

21323213332210 is a deficient number, since it is larger than the sum of its proper divisors (17861626603790).

21323213332210 is a wasteful number, since it uses less digits than its factorization.

21323213332210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307195.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 21323213332210 its reverse (1223331232312), we get a palindrome (22546544564522).

The spelling of 21323213332210 in words is "twenty-one trillion, three hundred twenty-three billion, two hundred thirteen million, three hundred thirty-two thousand, two hundred ten".