211021122012311 has 8 divisors (see below), whose sum is σ = 229596335767344. Its totient is φ = 192780596793600.

The previous prime is 211021122012241. The next prime is 211021122012359. The reversal of 211021122012311 is 113210221120112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211021122012311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211021122012391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83672132765 + ... + 83672135286.

It is an arithmetic number, because the mean of its divisors is an integer number (28699541970918).

Almost surely, 2^{211021122012311} is an apocalyptic number.

211021122012311 is a deficient number, since it is larger than the sum of its proper divisors (18575213755033).

211021122012311 is a wasteful number, since it uses less digits than its factorization.

211021122012311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167344268161.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 211021122012311 its reverse (113210221120112), we get a palindrome (324231343132423).

The spelling of 211021122012311 in words is "two hundred eleven trillion, twenty-one billion, one hundred twenty-two million, twelve thousand, three hundred eleven".