100111221019 has 2 divisors, whose sum is σ = 100111221020. Its totient is φ = 100111221018.

The previous prime is 100111220959. The next prime is 100111221047. The reversal of 100111221019 is 910122111001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100111221019 - 2²¹ = 100109123867 is a prime.

It is a super-2 number, since 2×100111221019² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100111220987 and 100111221005.

It is not a weakly prime, because it can be changed into another prime (100111224019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50055610509 + 50055610510.

It is an arithmetic number, because the mean of its divisors is an integer number (50055610510).

Almost surely, 2^100111221019 is an apocalyptic number.

100111221019 is a deficient number, since it is larger than the sum of its proper divisors (1).

100111221019 is an equidigital number, since it uses as much as digits as its factorization.

100111221019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 100111221019 in words is "one hundred billion, one hundred eleven million, two hundred twenty-one thousand, nineteen".