212211221223213 has 64 divisors (see below), whose sum is σ = 331516870675200. Its totient is φ = 133792004378880.

The previous prime is 212211221223167. The next prime is 212211221223217. The reversal of 212211221223213 is 312322122112212.

212211221223213 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 1 + 1 + 221 + 223 + 213 = 666.

It is not a de Polignac number, because 212211221223213 - 2²⁹ = 212210684352301 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212211221223217) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2660682331 + ... + 2660762087.

It is an arithmetic number, because the mean of its divisors is an integer number (5179951104300).

Almost surely, 2^{212211221223213} is an apocalyptic number.

It is an amenable number.

212211221223213 is a deficient number, since it is larger than the sum of its proper divisors (119305649451987).

212211221223213 is a wasteful number, since it uses less digits than its factorization.

212211221223213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88859 (or 88853 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 212211221223213 its reverse (312322122112212), we get a palindrome (524533343335425).

The spelling of 212211221223213 in words is "two hundred twelve trillion, two hundred eleven billion, two hundred twenty-one million, two hundred twenty-three thousand, two hundred thirteen".