1122201011221 has 2 divisors, whose sum is σ = 1122201011222. Its totient is φ = 1122201011220.

The previous prime is 1122201011207. The next prime is 1122201011231. The reversal of 1122201011221 is 1221101022211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1020958680625 + 101242330596 = 1010425^2 + 318186^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122201011221 - 2⁹ = 1122201010709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122201011195 and 1122201011204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122201011231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561100505610 + 561100505611.

It is an arithmetic number, because the mean of its divisors is an integer number (561100505611).

Almost surely, 2^{1122201011221} is an apocalyptic number.

It is an amenable number.

1122201011221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122201011221 is an equidigital number, since it uses as much as digits as its factorization.

1122201011221 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1122201011221 its reverse (1221101022211), we get a palindrome (2343302033432).

The spelling of 1122201011221 in words is "one trillion, one hundred twenty-two billion, two hundred one million, eleven thousand, two hundred twenty-one".