213243332211 has 288 divisors, whose sum is σ = 414644630400. Its totient is φ = 108884466432.

The previous prime is 213243332207. The next prime is 213243332213. The reversal of 213243332211 is 112233342312.

213243332211 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 433 + 3 + 221 + 1 = 666.

It is not a de Polignac number, because 213243332211 - 2² = 213243332207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (213243332213) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1082453365 + ... + 1082453561.

It is an arithmetic number, because the mean of its divisors is an integer number (1439738300).

Almost surely, 2^213243332211 is an apocalyptic number.

213243332211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

213243332211 is a deficient number, since it is larger than the sum of its proper divisors (201401298189).

213243332211 is an frugal number, since it uses more digits than its factorization.

213243332211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 257 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 213243332211 its reverse (112233342312), we get a palindrome (325476674523).

The spelling of 213243332211 in words is "two hundred thirteen billion, two hundred forty-three million, three hundred thirty-two thousand, two hundred eleven".