212531112211 has 8 divisors (see below), whose sum is σ = 231876649584. Its totient is φ = 193189662720.

The previous prime is 212531112191. The next prime is 212531112217. The reversal of 212531112211 is 112211135212.

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

It is a cyclic number.

It is not a de Polignac number, because 212531112211 - 2¹¹ = 212531110163 is a prime.

It is a super-3 number, since 3×212531112211³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212531112217) 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, 912750 + ... + 1121683.

It is an arithmetic number, because the mean of its divisors is an integer number (28984581198).

Almost surely, 2^212531112211 is an apocalyptic number.

212531112211 is a deficient number, since it is larger than the sum of its proper divisors (19345537373).

212531112211 is a wasteful number, since it uses less digits than its factorization.

212531112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043941.

The product of its digits is 240, while the sum is 22.

Adding to 212531112211 its reverse (112211135212), we get a palindrome (324742247423).

It can be divided in two parts, 212531 and 112211, that multiplied together give a square (23848316041 = 154429²).

The spelling of 212531112211 in words is "two hundred twelve billion, five hundred thirty-one million, one hundred twelve thousand, two hundred eleven".