111662101 has 2 divisors, whose sum is σ = 111662102. Its totient is φ = 111662100.

The previous prime is 111662081. The next prime is 111662113. The reversal of 111662101 is 101266111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96059601 + 15602500 = 9801^2 + 3950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111662101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111662191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55831050 + 55831051.

It is an arithmetic number, because the mean of its divisors is an integer number (55831051).

Almost surely, 2^111662101 is an apocalyptic number.

It is an amenable number.

111662101 is a deficient number, since it is larger than the sum of its proper divisors (1).

111662101 is an equidigital number, since it uses as much as digits as its factorization.

111662101 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 square root of 111662101 is about 10567.0289580374. The cubic root of 111662101 is about 481.5432117495.

The spelling of 111662101 in words is "one hundred eleven million, six hundred sixty-two thousand, one hundred one".