11221120019 has 2 divisors, whose sum is σ = 11221120020. Its totient is φ = 11221120018.

The previous prime is 11221119989. The next prime is 11221120021. The reversal of 11221120019 is 91002112211.

It is a strong prime.

It is an emirp because it is prime and its reverse (91002112211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11221120019 is a prime.

It is a super-2 number, since 2×11221120019² (a number of 21 digits) contains 22 as substring.

Together with 11221120021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11221120319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610560009 + 5610560010.

It is an arithmetic number, because the mean of its divisors is an integer number (5610560010).

Almost surely, 2^11221120019 is an apocalyptic number.

11221120019 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221120019 is an equidigital number, since it uses as much as digits as its factorization.

11221120019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 11221120019 in words is "eleven billion, two hundred twenty-one million, one hundred twenty thousand, nineteen".