212021001221011 has 2 divisors, whose sum is σ = 212021001221012. Its totient is φ = 212021001221010.

The previous prime is 212021001220913. The next prime is 212021001221021. The reversal of 212021001221011 is 110122100120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212021001221011 - 2¹¹ = 212021001218963 is a prime.

It is not a weakly prime, because it can be changed into another prime (212021001221021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010500610505 + 106010500610506.

It is an arithmetic number, because the mean of its divisors is an integer number (106010500610506).

Almost surely, 2^{212021001221011} is an apocalyptic number.

212021001221011 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021001221011 is an equidigital number, since it uses as much as digits as its factorization.

212021001221011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212021001221011 its reverse (110122100120212), we get a palindrome (322143101341223).

The spelling of 212021001221011 in words is "two hundred twelve trillion, twenty-one billion, one million, two hundred twenty-one thousand, eleven".