111321901 has 2 divisors, whose sum is σ = 111321902. Its totient is φ = 111321900.

The previous prime is 111321877. The next prime is 111321941. The reversal of 111321901 is 109123111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79388100 + 31933801 = 8910^2 + 5651^2 .

It is a cyclic number.

It is not a de Polignac number, because 111321901 - 2²³ = 102933293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111321941) 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, 55660950 + 55660951.

It is an arithmetic number, because the mean of its divisors is an integer number (55660951).

Almost surely, 2^111321901 is an apocalyptic number.

It is an amenable number.

111321901 is a deficient number, since it is larger than the sum of its proper divisors (1).

111321901 is an equidigital number, since it uses as much as digits as its factorization.

111321901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 111321901 is about 10550.9194386082. The cubic root of 111321901 is about 481.0536763504.

The spelling of 111321901 in words is "one hundred eleven million, three hundred twenty-one thousand, nine hundred one".