221021022120011 has 2 divisors, whose sum is σ = 221021022120012. Its totient is φ = 221021022120010.

The previous prime is 221021022119999. The next prime is 221021022120133. The reversal of 221021022120011 is 110021220120122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221021022120011 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (221021022140011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110510511060005 + 110510511060006.

It is an arithmetic number, because the mean of its divisors is an integer number (110510511060006).

Almost surely, 2^{221021022120011} is an apocalyptic number.

221021022120011 is a deficient number, since it is larger than the sum of its proper divisors (1).

221021022120011 is an equidigital number, since it uses as much as digits as its factorization.

221021022120011 is an odious number, because the sum of its binary digits is odd.

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

Adding to 221021022120011 its reverse (110021220120122), we get a palindrome (331042242240133).

The spelling of 221021022120011 in words is "two hundred twenty-one trillion, twenty-one billion, twenty-two million, one hundred twenty thousand, eleven".