111021100219943 has 2 divisors, whose sum is σ = 111021100219944. Its totient is φ = 111021100219942.

The previous prime is 111021100219889. The next prime is 111021100220011. The reversal of 111021100219943 is 349912001120111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111021100219943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111021100239943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510550109971 + 55510550109972.

It is an arithmetic number, because the mean of its divisors is an integer number (55510550109972).

Almost surely, 2^{111021100219943} is an apocalyptic number.

111021100219943 is a deficient number, since it is larger than the sum of its proper divisors (1).

111021100219943 is an equidigital number, since it uses as much as digits as its factorization.

111021100219943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 35.

The spelling of 111021100219943 in words is "one hundred eleven trillion, twenty-one billion, one hundred million, two hundred nineteen thousand, nine hundred forty-three".