21102213312032 has 24 divisors (see below), whose sum is σ = 41561319614976. Its totient is φ = 10546957536832.

The previous prime is 21102213311873. The next prime is 21102213312077. The reversal of 21102213312032 is 23021331220112.

It is a junction number, because it is equal to n+sod(n) for n = 21102213311989 and 21102213312007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129577328 + ... + 129740079.

It is an arithmetic number, because the mean of its divisors is an integer number (1731721650624).

Almost surely, 2^{21102213312032} is an apocalyptic number.

It is an amenable number.

21102213312032 is a deficient number, since it is larger than the sum of its proper divisors (20459106302944).

21102213312032 is a wasteful number, since it uses less digits than its factorization.

21102213312032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259319960 (or 259319952 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21102213312032 its reverse (23021331220112), we get a palindrome (44123544532144).

The spelling of 21102213312032 in words is "twenty-one trillion, one hundred two billion, two hundred thirteen million, three hundred twelve thousand, thirty-two".