111110101601 has 2 divisors, whose sum is σ = 111110101602. Its totient is φ = 111110101600.

The previous prime is 111110101579. The next prime is 111110101607. The reversal of 111110101601 is 106101011111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110489095201 + 621006400 = 332399^2 + 24920^2 .

It is a cyclic number.

It is not a de Polignac number, because 111110101601 - 2¹⁴ = 111110085217 is a prime.

It is not a weakly prime, because it can be changed into another prime (111110101607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555050800 + 55555050801.

It is an arithmetic number, because the mean of its divisors is an integer number (55555050801).

Almost surely, 2^111110101601 is an apocalyptic number.

It is an amenable number.

111110101601 is a deficient number, since it is larger than the sum of its proper divisors (1).

111110101601 is an equidigital number, since it uses as much as digits as its factorization.

111110101601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 111110101601 its reverse (106101011111), we get a palindrome (217211112712).

The spelling of 111110101601 in words is "one hundred eleven billion, one hundred ten million, one hundred one thousand, six hundred one".