111100061 has 2 divisors, whose sum is σ = 111100062. Its totient is φ = 111100060.

The previous prime is 111100027. The next prime is 111100123. The reversal of 111100061 is 160001111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101888836 + 9211225 = 10094^2 + 3035^2 .

It is a cyclic number.

It is not a de Polignac number, because 111100061 - 2⁶ = 111099997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111100861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550030 + 55550031.

It is an arithmetic number, because the mean of its divisors is an integer number (55550031).

Almost surely, 2^111100061 is an apocalyptic number.

It is an amenable number.

111100061 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100061 is an equidigital number, since it uses as much as digits as its factorization.

111100061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 111100061 is about 10540.4013680694. The cubic root of 111100061 is about 480.7339192228.

Adding to 111100061 its reverse (160001111), we get a palindrome (271101172).

The spelling of 111100061 in words is "one hundred eleven million, one hundred thousand, sixty-one".