111220221019 has 2 divisors, whose sum is σ = 111220221020. Its totient is φ = 111220221018.

The previous prime is 111220221011. The next prime is 111220221071. The reversal of 111220221019 is 910122022111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111220221019 - 2³ = 111220221011 is a prime.

It is a super-2 number, since 2×111220221019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111220221011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610110509 + 55610110510.

It is an arithmetic number, because the mean of its divisors is an integer number (55610110510).

Almost surely, 2^111220221019 is an apocalyptic number.

111220221019 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220221019 is an equidigital number, since it uses as much as digits as its factorization.

111220221019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 111220221019 in words is "one hundred eleven billion, two hundred twenty million, two hundred twenty-one thousand, nineteen".