11222121999989 has 2 divisors, whose sum is σ = 11222121999990. Its totient is φ = 11222121999988.

The previous prime is 11222121999983. The next prime is 11222122000013. The reversal of 11222121999989 is 98999912122211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7896987984964 + 3325134015025 = 2810158^2 + 1823495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11222121999989 is a prime.

It is a super-2 number, since 2×11222121999989² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11222121999983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611060999994 + 5611060999995.

It is an arithmetic number, because the mean of its divisors is an integer number (5611060999995).

Almost surely, 2^{11222121999989} is an apocalyptic number.

It is an amenable number.

11222121999989 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222121999989 is an equidigital number, since it uses as much as digits as its factorization.

11222121999989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7558272, while the sum is 65.

The spelling of 11222121999989 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-one million, nine hundred ninety-nine thousand, nine hundred eighty-nine".