21013221210332 has 48 divisors (see below), whose sum is σ = 39697690042752. Its totient is φ = 9674943445440.

The previous prime is 21013221210323. The next prime is 21013221210343. The reversal of 21013221210332 is 23301212231012.

It is a junction number, because it is equal to n+sod(n) for n = 21013221210298 and 21013221210307.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 147981407 + ... + 148123337.

It is an arithmetic number, because the mean of its divisors is an integer number (827035209224).

Almost surely, 2^{21013221210332} is an apocalyptic number.

It is an amenable number.

21013221210332 is a deficient number, since it is larger than the sum of its proper divisors (18684468832420).

21013221210332 is a wasteful number, since it uses less digits than its factorization.

21013221210332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148818 (or 148816 counting only the distinct ones).

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

Adding to 21013221210332 its reverse (23301212231012), we get a palindrome (44314433441344).

The spelling of 21013221210332 in words is "twenty-one trillion, thirteen billion, two hundred twenty-one million, two hundred ten thousand, three hundred thirty-two".