21100530315 has 8 divisors (see below), whose sum is σ = 33760848528. Its totient is φ = 11253616160.

The previous prime is 21100530307. The next prime is 21100530317. The reversal of 21100530315 is 51303500112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21100530315 - 2³ = 21100530307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21100530291 and 21100530300.

It is not an unprimeable number, because it can be changed into a prime (21100530317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703350996 + ... + 703351025.

It is an arithmetic number, because the mean of its divisors is an integer number (4220106066).

Almost surely, 2^21100530315 is an apocalyptic number.

21100530315 is a deficient number, since it is larger than the sum of its proper divisors (12660318213).

21100530315 is a wasteful number, since it uses less digits than its factorization.

21100530315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406702029.

The product of its (nonzero) digits is 450, while the sum is 21.

The spelling of 21100530315 in words is "twenty-one billion, one hundred million, five hundred thirty thousand, three hundred fifteen".