11222121121207 has 2 divisors, whose sum is σ = 11222121121208. Its totient is φ = 11222121121206.

The previous prime is 11222121121181. The next prime is 11222121121261. The reversal of 11222121121207 is 70212112122211.

It is a happy number.

11222121121207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11222121121207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11222121181207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611060560603 + 5611060560604.

It is an arithmetic number, because the mean of its divisors is an integer number (5611060560604).

Almost surely, 2^{11222121121207} is an apocalyptic number.

11222121121207 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222121121207 is an equidigital number, since it uses as much as digits as its factorization.

11222121121207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 11222121121207 its reverse (70212112122211), we get a palindrome (81434233243418).

The spelling of 11222121121207 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred seven".