213234012042021 has 48 divisors (see below), whose sum is σ = 323043038502912. Its totient is φ = 135279346039200.

The previous prime is 213234012041993. The next prime is 213234012042071. The reversal of 213234012042021 is 120240210432312.

213234012042021 is a `hidden beast` number, since 2 + 1 + 3 + 234 + 0 + 1 + 2 + 0 + 420 + 2 + 1 = 666.

It is not a de Polignac number, because 213234012042021 - 2²⁹ = 213233475171109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213234012042071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71048736 + ... + 73989126.

It is an arithmetic number, because the mean of its divisors is an integer number (6730063302144).

Almost surely, 2^{213234012042021} is an apocalyptic number.

It is an amenable number.

213234012042021 is a deficient number, since it is larger than the sum of its proper divisors (109809026460891).

213234012042021 is a wasteful number, since it uses less digits than its factorization.

213234012042021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942214 (or 2942211 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 213234012042021 its reverse (120240210432312), we get a palindrome (333474222474333).

The spelling of 213234012042021 in words is "two hundred thirteen trillion, two hundred thirty-four billion, twelve million, forty-two thousand, twenty-one".