11220002121689 has 2 divisors, whose sum is σ = 11220002121690. Its totient is φ = 11220002121688.

The previous prime is 11220002121677. The next prime is 11220002121709. The reversal of 11220002121689 is 98612120002211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7032281904025 + 4187720217664 = 2651845^2 + 2046392^2 .

It is a cyclic number.

It is not a de Polignac number, because 11220002121689 - 2²⁴ = 11219985344473 is a prime.

It is a super-2 number, since 2×11220002121689² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11220002127689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610001060844 + 5610001060845.

It is an arithmetic number, because the mean of its divisors is an integer number (5610001060845).

Almost surely, 2^{11220002121689} is an apocalyptic number.

It is an amenable number.

11220002121689 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220002121689 is an equidigital number, since it uses as much as digits as its factorization.

11220002121689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 35.

The spelling of 11220002121689 in words is "eleven trillion, two hundred twenty billion, two million, one hundred twenty-one thousand, six hundred eighty-nine".