111021022109 has 2 divisors, whose sum is σ = 111021022110. Its totient is φ = 111021022108.

The previous prime is 111021022093. The next prime is 111021022139. The reversal of 111021022109 is 901220120111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101843956900 + 9177065209 = 319130^2 + 95797^2 .

It is a cyclic number.

It is not a de Polignac number, because 111021022109 - 2⁴ = 111021022093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111021022139) 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, 55510511054 + 55510511055.

It is an arithmetic number, because the mean of its divisors is an integer number (55510511055).

Almost surely, 2^111021022109 is an apocalyptic number.

It is an amenable number.

111021022109 is a deficient number, since it is larger than the sum of its proper divisors (1).

111021022109 is an equidigital number, since it uses as much as digits as its factorization.

111021022109 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 111021022109 in words is "one hundred eleven billion, twenty-one million, twenty-two thousand, one hundred nine".