11012021420221 has 2 divisors, whose sum is σ = 11012021420222. Its totient is φ = 11012021420220.

The previous prime is 11012021420107. The next prime is 11012021420273. The reversal of 11012021420221 is 12202412021011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11005899140196 + 6122280025 = 3317514^2 + 78245^2 .

It is a cyclic number.

It is not a de Polignac number, because 11012021420221 - 2¹⁵ = 11012021387453 is a prime.

It is a super-2 number, since 2×11012021420221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11012021420291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506010710110 + 5506010710111.

It is an arithmetic number, because the mean of its divisors is an integer number (5506010710111).

Almost surely, 2^{11012021420221} is an apocalyptic number.

It is an amenable number.

11012021420221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012021420221 is an equidigital number, since it uses as much as digits as its factorization.

11012021420221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11012021420221 its reverse (12202412021011), we get a palindrome (23214433441232).

The spelling of 11012021420221 in words is "eleven trillion, twelve billion, twenty-one million, four hundred twenty thousand, two hundred twenty-one".