111200220091 has 2 divisors, whose sum is σ = 111200220092. Its totient is φ = 111200220090.

The previous prime is 111200220073. The next prime is 111200220127. The reversal of 111200220091 is 190022002111.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (190022002111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111200220091 - 2¹¹ = 111200218043 is a prime.

It is not a weakly prime, because it can be changed into another prime (111200220041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55600110045 + 55600110046.

It is an arithmetic number, because the mean of its divisors is an integer number (55600110046).

Almost surely, 2^111200220091 is an apocalyptic number.

111200220091 is a deficient number, since it is larger than the sum of its proper divisors (1).

111200220091 is an equidigital number, since it uses as much as digits as its factorization.

111200220091 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 19.

The spelling of 111200220091 in words is "one hundred eleven billion, two hundred million, two hundred twenty thousand, ninety-one".