211022113021231 has 32 divisors (see below), whose sum is σ = 220014788112000. Its totient is φ = 202148548073472.

The previous prime is 211022113021217. The next prime is 211022113021271. The reversal of 211022113021231 is 132120311220112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211022113021231 - 2¹¹ = 211022113019183 is a prime.

It is a super-2 number, since 2×211022113021231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211022113021201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21601194115 + ... + 21601203883.

It is an arithmetic number, because the mean of its divisors is an integer number (6875462128500).

Almost surely, 2^{211022113021231} is an apocalyptic number.

211022113021231 is a deficient number, since it is larger than the sum of its proper divisors (8992675090769).

211022113021231 is a wasteful number, since it uses less digits than its factorization.

211022113021231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17811.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 211022113021231 its reverse (132120311220112), we get a palindrome (343142424241343).

The spelling of 211022113021231 in words is "two hundred eleven trillion, twenty-two billion, one hundred thirteen million, twenty-one thousand, two hundred thirty-one".