213112021005 has 80 divisors (see below), whose sum is σ = 412351040640. Its totient is φ = 104676561792.

The previous prime is 213112020997. The next prime is 213112021069. The reversal of 213112021005 is 500120211312.

213112021005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213112021005 - 2³ = 213112020997 is a prime.

It is a super-2 number, since 2×213112021005² (a number of 23 digits) contains 22 as substring.

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 79 ways as a sum of consecutive naturals, for example, 2265234 + ... + 2357436.

It is an arithmetic number, because the mean of its divisors is an integer number (5154388008).

Almost surely, 2^213112021005 is an apocalyptic number.

It is an amenable number.

213112021005 is a deficient number, since it is larger than the sum of its proper divisors (199239019635).

213112021005 is a wasteful number, since it uses less digits than its factorization.

213112021005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92672 (or 92663 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 213112021005 its reverse (500120211312), we get a palindrome (713232232317).

The spelling of 213112021005 in words is "two hundred thirteen billion, one hundred twelve million, twenty-one thousand, five".