21152211165302 has 64 divisors (see below), whose sum is σ = 41506951150080. Its totient is φ = 7864474830336.

The previous prime is 21152211165289. The next prime is 21152211165347. The reversal of 21152211165302 is 20356111225112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63043808 + ... + 63378435.

It is an arithmetic number, because the mean of its divisors is an integer number (648546111720).

Almost surely, 2^{21152211165302} is an apocalyptic number.

21152211165302 is a deficient number, since it is larger than the sum of its proper divisors (20354739984778).

21152211165302 is a wasteful number, since it uses less digits than its factorization.

21152211165302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126422325.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 21152211165302 in words is "twenty-one trillion, one hundred fifty-two billion, two hundred eleven million, one hundred sixty-five thousand, three hundred two".