212221221021011 has 2 divisors, whose sum is σ = 212221221021012. Its totient is φ = 212221221021010.

The previous prime is 212221221020989. The next prime is 212221221021067. The reversal of 212221221021011 is 110120122122212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212221221021011 - 2⁶ = 212221221020947 is a prime.

It is a super-2 number, since 2×212221221021011² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212221221021611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106110610510505 + 106110610510506.

It is an arithmetic number, because the mean of its divisors is an integer number (106110610510506).

Almost surely, 2^{212221221021011} is an apocalyptic number.

212221221021011 is a deficient number, since it is larger than the sum of its proper divisors (1).

212221221021011 is an equidigital number, since it uses as much as digits as its factorization.

212221221021011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212221221021011 its reverse (110120122122212), we get a palindrome (322341343143223).

The spelling of 212221221021011 in words is "two hundred twelve trillion, two hundred twenty-one billion, two hundred twenty-one million, twenty-one thousand, eleven".