11221021999969 has 2 divisors, whose sum is σ = 11221021999970. Its totient is φ = 11221021999968.

The previous prime is 11221021999949. The next prime is 11221022000029. The reversal of 11221021999969 is 96999912012211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10905925017744 + 315096982225 = 3302412^2 + 561335^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221021999969 - 2⁹ = 11221021999457 is a prime.

It is a super-2 number, since 2×11221021999969² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11221021999949) 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, 5610510999984 + 5610510999985.

It is an arithmetic number, because the mean of its divisors is an integer number (5610510999985).

Almost surely, 2^{11221021999969} is an apocalyptic number.

It is an amenable number.

11221021999969 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221021999969 is an equidigital number, since it uses as much as digits as its factorization.

11221021999969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2834352, while the sum is 61.

The spelling of 11221021999969 in words is "eleven trillion, two hundred twenty-one billion, twenty-one million, nine hundred ninety-nine thousand, nine hundred sixty-nine".