11121001222021 has 2 divisors, whose sum is σ = 11121001222022. Its totient is φ = 11121001222020.

The previous prime is 11121001221997. The next prime is 11121001222039. The reversal of 11121001222021 is 12022210012111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7990883044225 + 3130118177796 = 2826815^2 + 1769214^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121001222021 - 2⁷ = 11121001221893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11121001221986 and 11121001222004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11121001222321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560500611010 + 5560500611011.

It is an arithmetic number, because the mean of its divisors is an integer number (5560500611011).

Almost surely, 2^{11121001222021} is an apocalyptic number.

It is an amenable number.

11121001222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121001222021 is an equidigital number, since it uses as much as digits as its factorization.

11121001222021 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 11121001222021 its reverse (12022210012111), we get a palindrome (23143211234132).

The spelling of 11121001222021 in words is "eleven trillion, one hundred twenty-one billion, one million, two hundred twenty-two thousand, twenty-one".