211112123221131 has 16 divisors (see below), whose sum is σ = 307584820627200. Its totient is φ = 127733140764320.

The previous prime is 211112123221127. The next prime is 211112123221157. The reversal of 211112123221131 is 131122321211112.

It is a cyclic number.

It is not a de Polignac number, because 211112123221131 - 2² = 211112123221127 is a prime.

It is a super-2 number, since 2×211112123221131² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211112123221331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5339994480 + ... + 5340034013.

It is an arithmetic number, because the mean of its divisors is an integer number (19224051289200).

Almost surely, 2^{211112123221131} is an apocalyptic number.

211112123221131 is a deficient number, since it is larger than the sum of its proper divisors (96472697406069).

211112123221131 is a wasteful number, since it uses less digits than its factorization.

211112123221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10680029106.

The product of its digits is 288, while the sum is 24.

Adding to 211112123221131 its reverse (131122321211112), we get a palindrome (342234444432243).

The spelling of 211112123221131 in words is "two hundred eleven trillion, one hundred twelve billion, one hundred twenty-three million, two hundred twenty-one thousand, one hundred thirty-one".