211231321122 has 32 divisors (see below), whose sum is σ = 432817862400. Its totient is φ = 68684977280.

The previous prime is 211231321061. The next prime is 211231321129. The reversal of 211231321122 is 221123132112.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (211231321129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2239879 + ... + 2332277.

It is an arithmetic number, because the mean of its divisors is an integer number (13525558200).

Almost surely, 2^211231321122 is an apocalyptic number.

211231321122 is an abundant number, since it is smaller than the sum of its proper divisors (221586541278).

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

211231321122 is a wasteful number, since it uses less digits than its factorization.

211231321122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101738.

The product of its digits is 288, while the sum is 21.

Adding to 211231321122 its reverse (221123132112), we get a palindrome (432354453234).

It can be divided in two parts, 21123132112 and 2, that multiplied together give a palindrome (42246264224).

The spelling of 211231321122 in words is "two hundred eleven billion, two hundred thirty-one million, three hundred twenty-one thousand, one hundred twenty-two".