212001311 has 2 divisors, whose sum is σ = 212001312. Its totient is φ = 212001310.

The previous prime is 212001289. The next prime is 212001313. The reversal of 212001311 is 113100212.

212001311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212001311 - 2¹⁰ = 212000287 is a prime.

Together with 212001313, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 212001292 and 212001301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212001313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106000655 + 106000656.

It is an arithmetic number, because the mean of its divisors is an integer number (106000656).

Almost surely, 2^212001311 is an apocalyptic number.

212001311 is a deficient number, since it is larger than the sum of its proper divisors (1).

212001311 is an equidigital number, since it uses as much as digits as its factorization.

212001311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 212001311 is about 14560.2647984163. The cubic root of 212001311 is about 596.2744248821.

Adding to 212001311 its reverse (113100212), we get a palindrome (325101523).

The spelling of 212001311 in words is "two hundred twelve million, one thousand, three hundred eleven".