21310103101320 has 96 divisors (see below), whose sum is σ = 75554001918720. Its totient is φ = 5166085599360.

The previous prime is 21310103101303. The next prime is 21310103101327. The reversal of 21310103101320 is 2310130101312.

21310103101320 is a `hidden beast` number, since 2 + 1 + 31 + 0 + 1 + 0 + 310 + 1 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21310103101293 and 21310103101302.

It is not an unprimeable number, because it can be changed into a prime (21310103101327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2690665624 + ... + 2690673543.

It is an arithmetic number, because the mean of its divisors is an integer number (787020853320).

Almost surely, 2^{21310103101320} is an apocalyptic number.

21310103101320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21310103101320 is an abundant number, since it is smaller than the sum of its proper divisors (54243898817400).

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

21310103101320 is a wasteful number, since it uses less digits than its factorization.

21310103101320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5381339195 (or 5381339188 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21310103101320 its reverse (2310130101312), we get a palindrome (23620233202632).

The spelling of 21310103101320 in words is "twenty-one trillion, three hundred ten billion, one hundred three million, one hundred one thousand, three hundred twenty".