213122133211 has 16 divisors (see below), whose sum is σ = 230557803840. Its totient is φ = 195835691520.

The previous prime is 213122133209. The next prime is 213122133227. The reversal of 213122133211 is 112331221312.

It is a cyclic number.

It is not a de Polignac number, because 213122133211 - 2¹ = 213122133209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213122133281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19892146 + ... + 19902856.

It is an arithmetic number, because the mean of its divisors is an integer number (14409862740).

Almost surely, 2^213122133211 is an apocalyptic number.

213122133211 is a deficient number, since it is larger than the sum of its proper divisors (17435670629).

213122133211 is a wasteful number, since it uses less digits than its factorization.

213122133211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17526.

The product of its digits is 432, while the sum is 22.

Adding to 213122133211 its reverse (112331221312), we get a palindrome (325453354523).

The spelling of 213122133211 in words is "two hundred thirteen billion, one hundred twenty-two million, one hundred thirty-three thousand, two hundred eleven".