21103231321130 has 32 divisors (see below), whose sum is σ = 43607035874304. Its totient is φ = 7202947879296.

The previous prime is 21103231321063. The next prime is 21103231321153. The reversal of 21103231321130 is 3112313230112.

It is a junction number, because it is equal to n+sod(n) for n = 21103231321096 and 21103231321105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675936707 + ... + 675967926.

It is an arithmetic number, because the mean of its divisors is an integer number (1362719871072).

Almost surely, 2^{21103231321130} is an apocalyptic number.

21103231321130 is an abundant number, since it is smaller than the sum of its proper divisors (22503804553174).

21103231321130 is a wasteful number, since it uses less digits than its factorization.

21103231321130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351904870.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21103231321130 its reverse (3112313230112), we get a palindrome (24215544551242).

The spelling of 21103231321130 in words is "twenty-one trillion, one hundred three billion, two hundred thirty-one million, three hundred twenty-one thousand, one hundred thirty".