21152211165332 has 24 divisors (see below), whose sum is σ = 41238395776200. Its totient is φ = 9425919033216.

The previous prime is 21152211165289. The next prime is 21152211165347. The reversal of 21152211165332 is 23356111225112.

It can be written as a sum of positive squares in 4 ways, for example, as 3689457273616 + 17462753891716 = 1920796^2 + 4178846^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21152211165292 and 21152211165301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7013331107 + ... + 7013334122.

It is an arithmetic number, because the mean of its divisors is an integer number (1718266490675).

Almost surely, 2^{21152211165332} is an apocalyptic number.

It is an amenable number.

21152211165332 is a deficient number, since it is larger than the sum of its proper divisors (20086184610868).

21152211165332 is a wasteful number, since it uses less digits than its factorization.

21152211165332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14026665275 (or 14026665273 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The spelling of 21152211165332 in words is "twenty-one trillion, one hundred fifty-two billion, two hundred eleven million, one hundred sixty-five thousand, three hundred thirty-two".