21002122030332 has 24 divisors (see below), whose sum is σ = 49275696997072. Its totient is φ = 6962029401600.

The previous prime is 21002122030273. The next prime is 21002122030399. The reversal of 21002122030332 is 23303022120012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21002122030299 and 21002122030308.

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 7 ways as a sum of consecutive naturals, for example, 4834740469 + ... + 4834744812.

Almost surely, 2^{21002122030332} is an apocalyptic number.

It is an amenable number.

21002122030332 is an abundant number, since it is smaller than the sum of its proper divisors (28273574966740).

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

21002122030332 is a wasteful number, since it uses less digits than its factorization.

21002122030332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9669485469 (or 9669485467 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21002122030332 its reverse (23303022120012), we get a palindrome (44305144150344).

The spelling of 21002122030332 in words is "twenty-one trillion, two billion, one hundred twenty-two million, thirty thousand, three hundred thirty-two".