212221212011 has 2 divisors, whose sum is σ = 212221212012. Its totient is φ = 212221212010.

The previous prime is 212221211981. The next prime is 212221212017. The reversal of 212221212011 is 110212122212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212221212011 - 2²² = 212217017707 is a prime.

It is not a weakly prime, because it can be changed into another prime (212221212017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106110606005 + 106110606006.

It is an arithmetic number, because the mean of its divisors is an integer number (106110606006).

Almost surely, 2^212221212011 is an apocalyptic number.

212221212011 is a deficient number, since it is larger than the sum of its proper divisors (1).

212221212011 is an equidigital number, since it uses as much as digits as its factorization.

212221212011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212221212011 its reverse (110212122212), we get a palindrome (322433334223).

The spelling of 212221212011 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred twelve thousand, eleven".