111160421 has 2 divisors, whose sum is σ = 111160422. Its totient is φ = 111160420.

The previous prime is 111160417. The next prime is 111160453. The reversal of 111160421 is 124061111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110544196 + 616225 = 10514^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 111160421 - 2² = 111160417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111160421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111160411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55580210 + 55580211.

It is an arithmetic number, because the mean of its divisors is an integer number (55580211).

Almost surely, 2^111160421 is an apocalyptic number.

It is an amenable number.

111160421 is a deficient number, since it is larger than the sum of its proper divisors (1).

111160421 is an equidigital number, since it uses as much as digits as its factorization.

111160421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 111160421 is about 10543.2642478504. The cubic root of 111160421 is about 480.8209634175.

The spelling of 111160421 in words is "one hundred eleven million, one hundred sixty thousand, four hundred twenty-one".