21103201311324 has 24 divisors (see below), whose sum is σ = 53717239701888. Its totient is φ = 6394909488240.

The previous prime is 21103201311301. The next prime is 21103201311349. The reversal of 21103201311324 is 42311310230112.

It is a junction number, because it is equal to n+sod(n) for n = 21103201311294 and 21103201311303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79936368472 + ... + 79936368735.

It is an arithmetic number, because the mean of its divisors is an integer number (2238218320912).

Almost surely, 2^{21103201311324} is an apocalyptic number.

It is an amenable number.

21103201311324 is an abundant number, since it is smaller than the sum of its proper divisors (32614038390564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21103201311324 is a wasteful number, since it uses less digits than its factorization.

21103201311324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159872737225 (or 159872737223 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21103201311324 its reverse (42311310230112), we get a palindrome (63414511541436).

The spelling of 21103201311324 in words is "twenty-one trillion, one hundred three billion, two hundred one million, three hundred eleven thousand, three hundred twenty-four".