212100232231 has 2 divisors, whose sum is σ = 212100232232. Its totient is φ = 212100232230.

The previous prime is 212100232229. The next prime is 212100232241. The reversal of 212100232231 is 132232001212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212100232231 - 2¹ = 212100232229 is a prime.

It is a super-2 number, since 2×212100232231² (a number of 23 digits) contains 22 as substring.

Together with 212100232229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 212100232199 and 212100232208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212100232241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106050116115 + 106050116116.

It is an arithmetic number, because the mean of its divisors is an integer number (106050116116).

Almost surely, 2^212100232231 is an apocalyptic number.

212100232231 is a deficient number, since it is larger than the sum of its proper divisors (1).

212100232231 is an equidigital number, since it uses as much as digits as its factorization.

212100232231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212100232231 its reverse (132232001212), we get a palindrome (344332233443).

The spelling of 212100232231 in words is "two hundred twelve billion, one hundred million, two hundred thirty-two thousand, two hundred thirty-one".