111269401 has 2 divisors, whose sum is σ = 111269402. Its totient is φ = 111269400.

The previous prime is 111269393. The next prime is 111269413. The reversal of 111269401 is 104962111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110229001 + 1040400 = 10499^2 + 1020^2 .

It is an emirp because it is prime and its reverse (104962111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111269401 - 2³ = 111269393 is a prime.

It is not a weakly prime, because it can be changed into another prime (111269441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55634700 + 55634701.

It is an arithmetic number, because the mean of its divisors is an integer number (55634701).

Almost surely, 2^111269401 is an apocalyptic number.

It is an amenable number.

111269401 is a deficient number, since it is larger than the sum of its proper divisors (1).

111269401 is an equidigital number, since it uses as much as digits as its factorization.

111269401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 111269401 is about 10548.4312103744. The cubic root of 111269401 is about 480.9780419694.

It can be divided in two parts, 111 and 269401, that multiplied together give a triangular number (29903511 = T₇₇₃₃).

The spelling of 111269401 in words is "one hundred eleven million, two hundred sixty-nine thousand, four hundred one".