21323103031210 has 32 divisors (see below), whose sum is σ = 40430548368000. Its totient is φ = 8074557887040.

The previous prime is 21323103031207. The next prime is 21323103031211. The reversal of 21323103031210 is 1213030132312.

It is not an unprimeable number, because it can be changed into a prime (21323103031211) 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, 39843861 + ... + 40375480.

It is an arithmetic number, because the mean of its divisors is an integer number (1263454636500).

Almost surely, 2^{21323103031210} is an apocalyptic number.

21323103031210 is a deficient number, since it is larger than the sum of its proper divisors (19107445336790).

21323103031210 is a wasteful number, since it uses less digits than its factorization.

21323103031210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80220766.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21323103031210 its reverse (1213030132312), we get a palindrome (22536133163522).

The spelling of 21323103031210 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred three million, thirty-one thousand, two hundred ten".