21101113329 has 32 divisors (see below), whose sum is σ = 28735948800. Its totient is φ = 13770725760.

The previous prime is 21101113301. The next prime is 21101113339. The reversal of 21101113329 is 92331110112.

It is not a de Polignac number, because 21101113329 - 2⁹ = 21101112817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21101113299 and 21101113308.

It is not an unprimeable number, because it can be changed into a prime (21101113339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13534252 + ... + 13535810.

It is an arithmetic number, because the mean of its divisors is an integer number (897998400).

Almost surely, 2^21101113329 is an apocalyptic number.

It is an amenable number.

21101113329 is a deficient number, since it is larger than the sum of its proper divisors (7634835471).

21101113329 is a wasteful number, since it uses less digits than its factorization.

21101113329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125.

The product of its (nonzero) digits is 324, while the sum is 24.

The spelling of 21101113329 in words is "twenty-one billion, one hundred one million, one hundred thirteen thousand, three hundred twenty-nine".