211131122230 has 64 divisors (see below), whose sum is σ = 453476994048. Its totient is φ = 69199827840.

The previous prime is 211131122221. The next prime is 211131122233. The reversal of 211131122230 is 32221131112.

It is a junction number, because it is equal to n+sod(n) for n = 211131122198 and 211131122207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211131122233) 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, 2765349 + ... + 2840671.

It is an arithmetic number, because the mean of its divisors is an integer number (7085578032).

Almost surely, 2^211131122230 is an apocalyptic number.

211131122230 is an abundant number, since it is smaller than the sum of its proper divisors (242345871818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211131122230 is a wasteful number, since it uses less digits than its factorization.

211131122230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77101.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 211131122230 its reverse (32221131112), we get a palindrome (243352253342).

The spelling of 211131122230 in words is "two hundred eleven billion, one hundred thirty-one million, one hundred twenty-two thousand, two hundred thirty".