212001220111 has 2 divisors, whose sum is σ = 212001220112. Its totient is φ = 212001220110.

The previous prime is 212001220103. The next prime is 212001220157. The reversal of 212001220111 is 111022100212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212001220111 - 2³ = 212001220103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212001220091 and 212001220100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212001221111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106000610055 + 106000610056.

It is an arithmetic number, because the mean of its divisors is an integer number (106000610056).

Almost surely, 2^212001220111 is an apocalyptic number.

212001220111 is a deficient number, since it is larger than the sum of its proper divisors (1).

212001220111 is an equidigital number, since it uses as much as digits as its factorization.

212001220111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212001220111 its reverse (111022100212), we get a palindrome (323023320323).

The spelling of 212001220111 in words is "two hundred twelve billion, one million, two hundred twenty thousand, one hundred eleven".