111266401 has 2 divisors, whose sum is σ = 111266402. Its totient is φ = 111266400.

The previous prime is 111266383. The next prime is 111266423. The reversal of 111266401 is 104662111.

It is an a-pointer prime, because the next prime (111266423) can be obtained adding 111266401 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98485776 + 12780625 = 9924^2 + 3575^2 .

It is a cyclic number.

It is not a de Polignac number, because 111266401 - 2¹¹ = 111264353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111266101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55633200 + 55633201.

It is an arithmetic number, because the mean of its divisors is an integer number (55633201).

Almost surely, 2^111266401 is an apocalyptic number.

It is an amenable number.

111266401 is a deficient number, since it is larger than the sum of its proper divisors (1).

111266401 is an equidigital number, since it uses as much as digits as its factorization.

111266401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 111266401 is about 10548.2890081757. The cubic root of 111266401 is about 480.9737192863.

The spelling of 111266401 in words is "one hundred eleven million, two hundred sixty-six thousand, four hundred one".