213521115110052 has 12 divisors (see below), whose sum is σ = 498215935256816. Its totient is φ = 71173705036680.

The previous prime is 213521115110021. The next prime is 213521115110081. The reversal of 213521115110052 is 250011511125312.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8896713129574 + ... + 8896713129597.

Almost surely, 2^{213521115110052} is an apocalyptic number.

It is an amenable number.

213521115110052 is an abundant number, since it is smaller than the sum of its proper divisors (284694820146764).

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

213521115110052 is a wasteful number, since it uses less digits than its factorization.

213521115110052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17793426259178 (or 17793426259176 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 30.

Adding to 213521115110052 its reverse (250011511125312), we get a palindrome (463532626235364).

The spelling of 213521115110052 in words is "two hundred thirteen trillion, five hundred twenty-one billion, one hundred fifteen million, one hundred ten thousand, fifty-two".