21216532065035 has 32 divisors (see below), whose sum is σ = 25695848289600. Its totient is φ = 16816393820160.

The previous prime is 21216532065013. The next prime is 21216532065037. The reversal of 21216532065035 is 53056023561212.

It is not a de Polignac number, because 21216532065035 - 2⁸ = 21216532064779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21216532064983 and 21216532065001.

It is not an unprimeable number, because it can be changed into a prime (21216532065037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1167723431 + ... + 1167741599.

It is an arithmetic number, because the mean of its divisors is an integer number (802995259050).

Almost surely, 2^{21216532065035} is an apocalyptic number.

21216532065035 is a deficient number, since it is larger than the sum of its proper divisors (4479316224565).

21216532065035 is a wasteful number, since it uses less digits than its factorization.

21216532065035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21551.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 21216532065035 in words is "twenty-one trillion, two hundred sixteen billion, five hundred thirty-two million, sixty-five thousand, thirty-five".